Battery Life:Up to 10 days (typical usage) / up to 3 days (with AOD enabled)
Charging:Proprietary Magnetic Charging Cable (0-100% in 2 hours)
Sensors
3-axis accelerometer, Optical heart rate monitor, Vibration motor, Red and infrared sensors for blood oxygen (SpO₂) monitoring, Ambient light sensor, Device temperature sensor (skin temperature variation available in the Fitbit app)
Water Resistance
5 ATM (Water resistant to 50 meters), suitable for swimming in shallow water activities, not recommended for activities involving high-velocity or high-temperature water
Connectivity
Bluetooth 5.0 (Bluetooth LE), Wireless range up to 30ft
Physical Aspects
Design:Rectangular/Oval tracker with AMOLED display, Plastic/Resin case, lightweight (17.69g), Silicone band (included in small and large sizes, fits wrist 130-220 mm), buckle clasp
Weight:17.69g
Features
Health Tracking (24/7 Heart Rate Monitoring, Blood Oxygen (SpO₂) Monitoring (overnight), Skin Temperature Tracking (variation only), Sleep Tracking (Sleep Score, Sleep Stages (Premium), Smart Wake alarm), Stress Management Score, On-wrist mindfulness sessions (Premium only), Active Zone Minutes, Steps, distance & calories tracked, Women's health tracking (Menstrual Health Tracking, Period Tracking),...
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