Fitbit Inspire 3

Fitbit Inspire 3
Security Grade A- Calculator v1	Fitbit Inspire 3 Health & Fitness Tracker Brand: Fitbit (Parent: Google LLC) Category: Fitness tracker / IoT wearable device • Model / Gen: Inspire 3 FB424BKBK Release Date: 2022-09-14 • Status: In sale Classification Date: 2026-10-25 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	Rare	🔗 Proof
Known vulnerabilities	Rare	🔗 Proof
Prior attacks	None	🔗 Proof
Updatability	Very common	🔗 Proof
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Full	🔗 Proof
Communications	Encrypted with up-to-date encryption	🔗 Proof
Storage	Encrypted with up-to-date encryption	🔗 Proof
Category Score	Score: 1 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Full	🔗 Proof
Authentication	Secure	🔗 Proof
Brute-force protection	Exist	🔗 Proof
Event logging	Partial logging	🔗 Proof
Passwords	Require change after setup with complexity requirements	🔗 Proof
Category Score	Score: 2 / 3

Technical Specifications

Property	Details
Operating System & App	Fitbit embedded OS (Companion App: Fitbit App)
Hardware (CPU / GPU)	CPU: Embedded ARM MCU • GPU: None
Memory & Storage	Memory: Not publicly disclosed • Storage: Internal flash storage
Power, Battery & Charging	Battery: Lithium-polymer rechargeable battery • Power: 5V DC charging contact • Charging: Magnetic charging cable
Display & Camera	Display: AMOLED colour touch display • Camera: None
Sound & Connectivity	Sound: Buzzer for vibration alerts, no speaker • Connectivity: Bluetooth 5.0, Wi‑Fi not supported
Physical (Dimensions & Mass)	Dimensions: 18.7 × 44.8 × 11.7 mm • Mass: 17g