Cayin Control App Privacy Policy

Zhuhai Spark Electronic Equipment Co., Ltd. ("Cayin," "we," "us," or "our") respects your privacy and is committed to protecting your personal information.

This Privacy Policy explains how we collect, use, store, disclose, transfer, and protect information when you download, install, access, or use the Cayin Control App (the "App") and related services.

This Privacy Policy is intended to apply to users worldwide. Depending on where you live, you may have additional rights under applicable privacy and data protection laws.

Please read this Privacy Policy carefully. If you do not agree with this Privacy Policy, please do not use the App.

1. Information We Collect

We collect personal information only where it is reasonably necessary to provide the App and its functions, maintain security, provide customer support, comply with applicable law, or for other purposes described in this Privacy Policy.

The information we collect depends on the features you use, the permissions you grant, your device and operating system, and the Cayin products connected to the App.

1.1 Account and Contact Information

If the App provides account registration, login, customer support, or similar functions, we may collect information such as:

• Name;
• Nickname or account name;
• Email address;
• Mobile telephone number; and
• Account credentials or authentication information, such as encrypted login credentials.

We collect only the information necessary for the relevant account or service function.

1.2 Device and Technical Information

To enable the App to operate properly, communicate with compatible Cayin products, maintain security, diagnose technical problems, and provide firmware or software functions, we may collect or process certain technical information, such as:

• Mobile device model;
• Operating system and version;
• App version;
• IP address;
• Language, region, time zone, and similar system settings;
• Network and connection information;
• Information identifying a connected Cayin product, including its model and hardware serial number (SN);
• Device or application identifiers where technically necessary and permitted by applicable platform rules and law; and
• Diagnostic and technical information relating to communication between the App and compatible Cayin devices.

We do not collect device identifiers or other technical information beyond what is reasonably necessary for the purposes described in this Privacy Policy.

MAC Address and Wi-Fi Information

Where required for a specific network-related function and permitted by the operating system, the App may process network information necessary to identify or communicate with compatible devices on your local network.

This may include information associated with a network interface, such as a MAC address, Wi-Fi network name (SSID), or connection status, where technically necessary.

Such information is used only to provide network discovery, connection, device-control, troubleshooting, or related functions. We do not use MAC addresses for unrelated advertising purposes.

Cayin Device Serial Number (SN)

When you connect a compatible Cayin product to the App, we may process its hardware serial number for purposes including:

• Identifying the connected product;
• Device binding or registration;
• Checking compatibility;
• Firmware update verification;
• Troubleshooting;
• Product support; and
• After-sales service verification.

We do not use Cayin hardware serial numbers for behavioral advertising.

1.3 Usage and Diagnostic Information

When you use the App, we may collect information about how the App and connected Cayin products operate, including:

• Features used;
• App and device settings;
• Commands or operations performed through the App;
• Diagnostic logs;
• Crash and error information;
• Firmware or software update status and history; and
• Performance and technical information.

We use this information to maintain and improve the App, identify technical issues, improve compatibility, and enhance product performance and user experience.

1.4 Audio Preferences and Related Information

Depending on the functions available in the App, we may process information relating to your audio preferences, such as:

• Equalizer (EQ) settings;
• Digital filter settings;
• Volume or playback-related preferences;
• Device configuration settings;
• Playlists, favorites, or similar information, where such functions are available.

This information is used to provide the requested audio, playback, and personalization functions.

1.5 Location Information

Certain operating systems may require location permission to enable functions such as discovering or connecting to nearby devices, Wi-Fi networks, or Bluetooth devices.

Where the App requires access to location information, we will request the relevant permission through your device or operating system.

Depending on the function and your permission settings, location information may also be used to:

• Enable region-specific functions;
• Determine service availability;
• Provide localized product or support information; or
• Assist with customer service and technical support.

You may disable location permission through your device settings. Where technically possible, refusing or withdrawing location permission will not affect App functions that do not require location information.

1.6 Device Permissions and User Content

Some optional App functions may require access to information or features on your mobile device. Depending on the functions available and the permissions you choose to grant, these may include:

• Photos, videos, or audio files;
• Camera;
• Microphone;
• Local storage or media library;
• Bluetooth;
• Nearby-device access;
• Local network access; or
• Notifications.

We will request such permissions only when necessary for the relevant function.

Where required by applicable law or platform rules, we will provide an explanation before requesting access.

You can manage or revoke these permissions through your mobile device settings. If you do not grant a particular permission, the related feature may not function, but other App functions that do not require that permission should remain available.

1.7 Customer Support Information

When you contact us for technical support, submit feedback, request after-sales service, or report a problem, we may collect information that you voluntarily provide, such as:

• Your name and contact details;
• Product information;
• Device serial number;
• Description of the issue;
• Messages or correspondence;
• Photographs, screenshots, videos, or audio recordings you provide; and
• Diagnostic logs or other technical information required to investigate the issue.

We use this information to respond to your request, troubleshoot problems, provide support, and improve our products and services.

2. How We Use Your Information

We may use information collected through the App to:

• Provide, operate, maintain, and improve the App;
• Discover, connect to, identify, configure, and control compatible Cayin products;
• Provide audio and device configuration functions;
• Bind or register compatible Cayin hardware;
• Verify, download, or install firmware and software updates;
• Diagnose technical problems and improve reliability;
• Respond to customer service and after-sales support requests;
• Protect the security and integrity of the App, our products, users, and systems;
• Detect or prevent fraud, misuse, unauthorized access, or security incidents;
• Understand how the App and its features are used;
• Improve our products, services, compatibility, and user experience;
• Send service-related notices, including important product, firmware, security, or policy information;
• Send marketing or promotional communications where you have provided consent or where otherwise permitted by applicable law; and
• Comply with applicable legal, regulatory, tax, accounting, or other requirements.

We will not use your personal information for purposes that are materially incompatible with the purposes described in this Privacy Policy unless permitted by law or after providing appropriate notice and, where required, obtaining your consent.

3. Legal Bases for Processing

Where applicable law requires us to identify a legal basis for processing personal information, we may rely on one or more of the following bases:

• Performance of a contract: where processing is necessary to provide the App, connected-device functions, customer support, or other services you request;
• Consent: where you have specifically agreed to processing, such as certain device permissions or marketing communications;
• Legitimate interests: where processing is reasonably necessary for purposes such as improving our products, maintaining security, preventing fraud, troubleshooting, and operating our business, provided that such interests are not overridden by your rights where applicable;
• Legal obligations: where processing is necessary for us to comply with applicable laws, regulations, legal proceedings, or regulatory requirements; and
• Other legal bases recognized under the laws applicable in your jurisdiction.

Where processing is based on your consent, you may withdraw that consent at any time, subject to applicable law. Withdrawal of consent will not affect the lawfulness of processing carried out before the withdrawal.

4. How We Share Your Information

We do not sell or rent your personal information.

We may disclose or share information in the following circumstances.

4.1 Service Providers

We may engage trusted third-party service providers to perform services on our behalf, such as:

• Cloud hosting or storage;
• Software and technical infrastructure;
• Crash reporting and diagnostics;
• Analytics;
• Customer support;
• Email or notification delivery; and
• Security services.

These providers may process information only as necessary to perform services for us and must protect personal information in accordance with contractual obligations, applicable law, and appropriate security requirements.

4.2 Business Partners and Affiliates

Where necessary to provide a service requested by you, we may share limited information with our affiliates, distributors, authorized service centers, or business partners.

We will limit such disclosures to information reasonably necessary for the relevant purpose.

4.3 Legal and Regulatory Requirements

We may disclose information if we reasonably believe that disclosure is necessary to:

• Comply with applicable laws or regulations;
• Respond to lawful requests from courts, law enforcement agencies, regulators, or other governmental authorities;
• Establish, exercise, or defend legal claims;
• Protect the rights, property, security, or safety of Cayin, our users, or others; or
• Investigate fraud, security incidents, or violations of applicable terms.

4.4 Corporate Transactions

If Cayin or all or part of its business is involved in a merger, acquisition, restructuring, financing, sale of assets, or similar corporate transaction, personal information may be transferred as part of that transaction, subject to applicable legal requirements and appropriate protections.

5. Third-Party Services and SDKs

The App may contain or use third-party software development kits ("SDKs"), services, or components that support functions such as analytics, diagnostics, cloud services, or device connectivity.

Where third-party services process personal information on our behalf, we require them to provide appropriate protection consistent with applicable law and our contractual requirements.

Where a third party processes information independently for its own purposes, its processing may also be subject to its own privacy policy.

We periodically review the third-party technologies integrated into the App and seek to limit access to information to what is reasonably necessary for the relevant function.

6. Data Retention and Deletion

We retain personal information only for as long as reasonably necessary for the purposes described in this Privacy Policy, including providing the App and associated services, maintaining business and support records, fulfilling contractual obligations, resolving disputes, enforcing agreements, and complying with legal requirements.

Different categories of information may be retained for different periods depending on:

• The nature of the information;
• The purpose for which it was collected;
• Whether you maintain an account or continue to use our services;
• Security and fraud-prevention requirements;
• Customer service and warranty requirements; and
• Applicable legal or regulatory retention obligations.

When personal information is no longer required, we will delete it, anonymize it, or otherwise dispose of it in accordance with applicable law.

If the App provides user accounts, you may contact us to request deletion of your account and associated personal information. Where required by applicable law or platform policy, we will provide an accessible account-deletion mechanism.

Certain information may be retained after an account-deletion request where retention is required or permitted by law, for example for security, fraud prevention, legal claims, accounting, or regulatory compliance.

7. Data Security

We use reasonable administrative, organizational, physical, and technical safeguards designed to protect personal information against unauthorized access, loss, misuse, alteration, disclosure, or destruction.

Depending on the nature of the information and relevant systems, these safeguards may include:

• Encryption during transmission;
• Encryption or other protection for stored information;
• Access controls;
• Authentication mechanisms;
• Network and system security measures;
• Logging and monitoring; and
• Internal data-security procedures.

However, no electronic transmission, network, information system, or storage method can be guaranteed to be completely secure. Accordingly, while we take reasonable measures to protect your information, we cannot guarantee absolute security.

8. International Data Transfers

Cayin is headquartered in the People's Republic of China.

Your information may therefore be processed or stored in China and, depending on the services or infrastructure used, may also be processed in other countries or regions.

Data protection laws in countries where information is processed may differ from those in your place of residence.

Where personal information is transferred across national borders, we will take measures required by applicable law to provide an appropriate level of protection. Depending on the applicable jurisdiction, these measures may include:

• Contractual data-protection safeguards;
• Standard contractual clauses or equivalent transfer mechanisms;
• Security and access-control measures;
• Consent, where legally permitted and required; or
• Other recognized lawful cross-border transfer mechanisms.

Where Chinese data protection laws apply, cross-border transfers will also be handled in accordance with applicable requirements of the People's Republic of China.

9. Your Privacy Rights

Depending on where you live, applicable privacy laws may provide you with certain rights regarding your personal information.

These rights may include the right to:

• Request confirmation of whether we process your personal information;
• Access personal information we hold about you;
• Correct inaccurate or incomplete personal information;
• Request deletion of your personal information;
• Request restriction of certain processing activities;
• Object to certain processing activities;
• Withdraw consent where processing is based on consent;
• Request a copy of certain personal information in a portable format;
• Opt out of certain marketing communications;
• Object to or opt out of certain forms of targeted advertising, sale, or sharing of personal information where applicable;
• Request information about categories of information collected, used, or disclosed;
• Lodge a complaint with an appropriate data protection or regulatory authority; and
• Exercise other privacy rights available under the laws of your jurisdiction.

These rights are subject to applicable legal limitations and exceptions.

We may need to verify your identity before processing certain requests in order to protect your information from unauthorized access or deletion.

We will not discriminate against you for exercising privacy rights provided by applicable law.

To submit a privacy request, please contact us at:

Email: info@cayin.cn

We will respond within the period required by applicable law.

10. Marketing Communications

Where permitted by applicable law, we may send you information about Cayin products, services, software updates, events, or promotions.

Where consent is required, we will send such communications only after obtaining your consent.

You can unsubscribe from marketing emails by using the unsubscribe mechanism provided in the relevant communication or by contacting us at info@cayin.cn.

You may continue to receive non-promotional communications that are necessary for providing our services, such as security notices, firmware information, account notices, or responses to customer support requests.

11. Cookies, SDKs, Local Storage, and Similar Technologies

The App or related online services may use cookies, SDKs, local storage, device identifiers, or similar technologies where appropriate to:

• Provide essential functionality;
• Remember settings and preferences;
• Maintain security;
• Diagnose technical problems;
• Analyze App performance; and
• Understand how features are used.

Where required by applicable law, we will obtain consent before using non-essential tracking technologies.

You may be able to control certain technologies through the App, your mobile operating system, or your device settings.

Disabling certain technologies may affect specific features but should not prevent use of functions that do not depend on those technologies.

12. Third-Party Websites and Services

The App may contain links to websites, online stores, applications, or services operated by third parties.

Cayin does not control the privacy or security practices of independent third parties. Information you provide directly to those third parties is governed by their respective privacy policies and terms.

We encourage you to review the privacy policies of third-party services before providing personal information to them.

13. Children's Privacy

The App is intended for a general audience and is not directed to children below the minimum age at which they may lawfully provide consent to the processing of personal information in their jurisdiction.

We do not knowingly collect personal information from children where parental or guardian consent is required by applicable law unless the required consent has been obtained.

If you are a parent or legal guardian and believe that a child has provided personal information to us without the required authorization, please contact us at info@cayin.cn.

If we determine that we have collected a child's personal information in violation of applicable law, we will take appropriate steps to delete or otherwise handle the information as required.

14. Region-Specific Privacy Rights

Users in certain countries or regions may have additional rights under local privacy and data protection laws.

For example, users in the European Economic Area ("EEA"), United Kingdom, Switzerland, certain U.S. states, and other jurisdictions may have rights in addition to those described above.

Where local law provides greater protection than this Privacy Policy, we will process your personal information in accordance with the applicable local requirements.

Nothing in this Privacy Policy is intended to limit any rights that cannot lawfully be limited or waived.

15. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect:

• Changes to the App or its functions;
• Changes to our information-processing practices;
• Changes to applicable laws or regulations; or
• Security, technical, or operational developments.

When we make material changes, we will provide notice in an appropriate manner, such as through the App, on our website, or by email where appropriate.

Where applicable law requires consent to a material change, we will request such consent before the change takes effect.

We encourage you to review this Privacy Policy periodically.

16. Contact Us

If you have questions, comments, complaints, or requests concerning this Privacy Policy or our handling of personal information, please contact:

ZHUHAI SPARK ELECTRONIC EQUIPMENT CO., LTD.

Email: info@cayin.cn
Telephone: (+86) 0756-3828711
Address: NO. 9 LianFa Road, Shuanglin Zone, Liangang Industrial Park, Zhuhai City, Guangdong Province, China

For privacy-related requests, please include sufficient information for us to identify and respond to your request. For security reasons, we may ask you to verify your identity before completing certain requests.