Fitbit Sense Specs

Audio Speaker (75dB SPL @10cm); Microphone
Battery Life Up to 6+ days; Fast-charging 1 day of battery life in 12 minutes
Bluetooth Bluetooth 5.0
IP Rating Water resistant to 50 meters
Operating Temperature 14° to 113°F
Sensors Optical heart rate; Multipurpose electrical sensors compatible with ECG app & EDA app; skin temperature sensor
Size Dimensions - 1.59in l x 1.59in w x 0.49in h; Small - Fits wrist 5.5" - 7.1" in circumference; Large - Fits wrist 7.1" - 8.7" in circumference
Storage Saves 7 days of detailed motion data, minute by minute; Saves daily totals for past 30 days; Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times
Wi-Fi 802.11b/g/n 2.4GHz; NFC; Built-in GPS
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