Amazfit GTS 4 mini (A2176)

Amazfit GTS 4 mini (A2176)
Security Grade D Calculator v1	Amazfit GTS 4 mini Brand: Amazfit (Parent: Zepp Health) Category: Smart watch • Model / Gen: GTS 4 mini A2176 Release Date: 2022-08-01 • Status: In sale Classification Date: 2026-10-25 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	None	🔗 Proof	Almost no public tampering
Known vulnerabilities	Rare	🔗 Proof	Occasional Bluetooth vulnerabilities
Prior attacks	Rare	🔗 Proof	Bluetooth sniffing attacks are uncommon
Updatability	Rare	🔗 Proof	OTA updates released occasionally
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof	Bind with Zepp account via App
Communications	Encrypted with obselete encryption	🔗 Proof	Older Bluetooth encryption scheme
Storage	No encryption	🔗 Proof	Minimal local sensitive data
Category Score	Score: 3 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Basic	🔗 Proof	Bound Zepp account in mobile App
Authentication	Basic	🔗 Proof	Watch screen passcode
Brute-force protection	Absent	🔗 Proof	No brute force lock
Event logging	Absent	🔗 Proof	No local access log
Passwords	Require change after setup with complexity requirements	🔗 Proof	Simple numeric passcode rules
Category Score	Score: 3 / 3

Technical Specifications

Property	Details
Operating System & App	Zepp OS (Companion App: Zepp)
Hardware (CPU / GPU)	CPU: Low-power MCU • GPU: None
Memory & Storage	Memory: 128 MB RAM • Storage: 256 MB Flash
Power, Battery & Charging	Battery: 270 mAh • Power: 3.85 V • Charging: Magnetic 5V charging
Display & Camera	Display: 1.55-inch AMOLED, 354 × 354 • Camera: None
Sound & Connectivity	Sound: Vibration motor, no speaker • Connectivity: Bluetooth 5.2, GNSS
Physical (Dimensions & Mass)	Dimensions: 40.4 mm × 40.4 mm × 8.9 mm • Mass: 24.7 g

Lightweight fitness smartwatch running Zepp OS for health tracking.