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Specifications
Processor
Unspecified
Display
Touch-enabled OLED (approx. 40% larger than Charge 2) with Corning Gorilla Glass 3
Battery
Battery Life:Up to ~7 days (typical usage)
Charging:Proprietary USB charging cable (~1-2 hours full charge)
Sensors
24×7 heart-rate monitor (PurePulse), Relative SpO₂ sensor (blood-oxygen estimation), 3-axis accelerometer, Altimeter (floors climbed), Optical sensor for sleep tracking
Water Resistance
Swim-proof to 50 metres (5 ATM) – suitable for pool & shower use
Connectivity
Bluetooth 4.x + USB wireless sync with Fitbit app
Physical Aspects
Design:Anodised aluminium case, interchangeable elastomer strap (various colours), fits both men & women
Weight:Approx. ~29 g (varies by strap size & region)
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