Fitbit Review

Fitbit Charge 2 & Alta HR
Overall Score
Core Features
Accuracy Questionable - slow to respond to HR changes
Continuous 24/7 HRM Yes
A Display? Yes
Continuous HR Display No
Custom HR Zones No
HR Alarms at Zone Thresholds No
Battery Life Up to 5 days, less when in 24/7 HR mode
Can Shower With It? No
Comfort Normal
Connectivity Tech Bluetooth only
Secondary Features
Companion App Yes
Type Wrist
HR Alarm None
Pairs with Another Device? No
Sleep State Monitoring Yes
Charger Type Custom Dongle
Tracks HRV? No
Tracks RR? No
Other Features
Display Options Workout State, Reminder To Move, Time (Clock), Smart Alerts
Data Export Supported? No
Where To Buy
Fitbit devices are not recommended for ME/CFS They do not provide enough important features, such as continuous HR display or custom HR zones or HR threshold alarms.

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