Fitbit Sense 3

Classification

Fitbit Sense 3
Classification
Grade	A-
Calculator version	1
Classification date	2025-09-24
Information
Name	Fitbit Sense 3
Brand by Parent	Fitbit by Google
Generation	3rd Generation
Model(s)	Sense 3
Release date	2025-08-20
Type/Category	Smartwatch
Website	[1]
Status
More
Dimensions	40mm
Mass	33g
Operating system	Fitbit OS 5
Companion App	Fitbit App
CPU	ARM Cortex M4
GPU	Adreno 405
Memory	1GB RAM
Storage	16GB
Battery	6-day battery life
Power	4W
Charging	Wireless charging
Display	1.58 inches, 336 x 336 pixels
Camera
Sound	Dual speakers
Connectivity	Bluetooth 5.0, Wi-Fi

Device
Criterion	Value	Proof(s)	Comment
Known hardware tampering	Rare	[]	Minor tampering risk
Known vulnerabilities	Rare	[]	Rare security issues
Prior attacks	None	[]	No prior attacks
Updatability	Very common	[]	Frequent updates
Category score	2

System
Criterion	Value	Proof(s)	Comment
Authentication with other systems	Full	[]	Supports Google login
Communications	Encrypted with obselete encryption	[]	Uses modern encryption
Storage	Encrypted with up-to-date encryption	[]	Secure data storage
Category score	2

User Authentication
Criterion	Value	Proof(s)	Comment
Account management	Full	[]	Secure and easy management
Authentication	Secure	[]	Secure account access
Brute-force protection	Exist	[]	Effective brute-force prevention
Event logging	Access event logged	[]	Detailed event logging
Passwords	Require change after setup with complexity requirements	[]	Strong password policy
Category score	1

Grade	A-