Fitbit Sense 2

What's in the Box Fitbit Sense 2 Classic Band (Small & Large) Charging Cable Tech Specs Colors Shadow Grey / Graphite Aluminum Lunar White / Platinum Aluminum Blue Mist / Soft Gold Aluminum Size & Weight Dimensions: 1.59" x 1.59" x 0.44" (40.5 mm x 40.5 mm x 11.2 mm) Weight: 0.08 lb (37.64 g) Battery & Power Battery life: 6+ days (varies by usage and features) Up to 5 hours with GPS Always-on display, SpO2, and cEDA sensor may require more frequent charging Recommended: charge every few days Sensors & Components Optical heart rate sensor cEDA sensor for body response tracking ECG and EDA-compatible multipurpose electrical sensors (availability varies by country) SpO2, gyroscope, altimeter, 3-axis accelerometer Skin temperature sensor (variation only, not medical) Ambient light sensor, vibration motor Built-in GPS + GLONASS NFC, microphone, speaker (75dB SPL @ 10cm) WiFi (disabled) Display AMOLED with Corning® Gorilla® Glass 3 Water Resistance Up to 50 meters. Dry band after use for best skin comfort. Materials Aluminum case and buckle Flexible sport-style band Band Sizes Small: Fits wrists 5.1"–7" Large: Fits wrists 6.5"–8.6" Memory Stores 7 days of detailed motion data Environment Operating temp: -14°F to 113°F Device Requirements Google account required Fitbit app for setup and syncing iOS 16.4+ Android 11.0+ Bluetooth® LE, internet connection, and location permissions Sync range: up to 30 ft Some features may require Android 11+