Vivo Watch

Security Grade

Calculator v1

vivo Watch

   Brand: vivo (Parent: BBK Electronics)

   Category: Smartwatch • Model / Gen: 1st generation 46mm: WA2056 / 42mm: WA2052

   Release Date: 2020-09-28 • Status: End of sale

   Classification Date: 2025-10-15 • Official Website

Security Evaluation

Criterion	Value	Proof	Comment
Known hardware tampering	None	🔗 Proof	No public cases of hardware tampering due to consumer-oriented design.
Known vulnerabilities	None	🔗 Proof	No vulnerabilities related to vivo Watch recorded in NVD as of Sep 2025.
Prior attacks	None	🔗 Proof	No public targeted attacks on vivo Watch have been reported.
Updatability	Rare	🔗 Proof	Only basic function updates supported; system maintenance ceased after 2023.
Category Score	Score: 2 / 3

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof	Only supports Bluetooth pairing with vivo smartphones; no cross-brand authentication.
Communications	Encrypted with obselete encryption	🔗 Proof	Data transmission is protected by BLE encryption.
Storage	Encrypted with obselete encryption	🔗 Proof	Health data (e.g., heart rate, sleep) is unencrypted; relies on phone-side encryption.
Category Score	Score: 2 / 3

Criterion	Value	Proof	Comment
Account management	Basic	🔗 Proof	Basic account management is available primarily through the companion vivo Health app for pairing and basic settings.
Authentication	Basic	🔗 Proof	Authentication for the vivo Watch relies on basic Bluetooth pairing with a trusted vivo device, with no advanced multi-factor authentication.
Brute-force protection	Absent	🔗 Proof	There are no dedicated mechanisms (e.g., account lockout after multiple failed attempts) for brute-force protection on the vivo Watch itself.
Event logging	Absent	🔗 Proof	The vivo Watch does not have built-in capabilities for logging access or usage events in a detailed manner.
Passwords	Require change after setup	🔗 Proof	The vivo Watch relies on Bluetooth pairing with a vivo device (which may have password protection) rather than having its own standalone password requirements.
Category Score	Score: 3 / 3

Property	Details
Operating System & App	Customized RTOS (Not BlueOS; BlueOS used in later models) (Companion App: vivo Health (formerly Sports & Health App))
Hardware (CPU / GPU)	CPU: ST Microcontroller + Apollo Ultra-low-power Coprocessor • GPU: No independent GPU; graphics processing relies on CPU
Memory & Storage	Memory: 2GB available memory (no independent RAM) • Storage: 2GB (for music storage and system data)
Power, Battery & Charging	Battery: 46mm: 478 mAh (typical) / 42mm: 226 mAh (typical) • Power: Magnetic charging • Charging: 5W (charging time < 2 hours)
Display & Camera	Display: 46mm: 1.39-inch AMOLED (454×454 resolution) / 42mm: 1.19-inch AMOLED (390×390 resolution) • Camera:
Sound & Connectivity	Sound: Built-in speaker + microphone (supports Bluetooth calls and voice assistant) • Connectivity: Bluetooth 5.0 (supports BLE) + 4-satellite positioning system (GPS/GLONASS/BDS/Galileo)
Physical (Dimensions & Mass)	Dimensions: 46mm: 46.2 × 46.2 × 10.6 mm / 42mm: 42 × 42 × 9.7 mm • Mass: 46mm: 46.8 g / 42mm: 35.6 g