Fitbit Charge 6 - Health and Fitness Tracker - Built-in GPS Sleep Tracking Stress Management 24/7 Heart Rate 7 Day Battery Life

What's IncludedFitbit Charge 6Band (small and large size bands)Charging cable Sensors & ComponentsOptical heart rate monitor3-axis accelerometerBuilt-in GPS + GLONASSRed and infrared sensors for oxygen saturation (SpO2) monitoringDevice temperature sensor (skin temperature variation available in the Fitbit app)Vibration motorAmbient light sensorNFCMultipurpose electrical sensors compatible with ECG app & EDA Scan appBattery & PowerBattery life of up to 7 days. Use of the always-on display and SpO2 features will require more frequent charging. We recommend charging your tracker every few days to ensure you are always tracking.Battery type: Lithium-polymerCharge time (0-100%): Two hoursRadio transceiver: Bluetooth 5.0MemorySaves 7 days of detailed motion data, minute by minuteSaves daily totals for the last 30 daysStores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times Water ResistanceWater resistant up to 50 meters. After getting the band wet, we recommend drying the band because, as with any wearable device, it's best for your skin if the band is clean and dry. CareGive your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on.MaterialsThe Charge 6 housing is made of aluminium, glass and resin. The band is made of silicone and has an aluminium buckle. Heart RateLike all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements. Environmental RequirementsOperating temperature: 14° to 113°F / -10° to 45°C Maximum operating altitude: 28,000ft / 8,500mCompatibilityGoogle account required. See fitbit.com/devices.The Fitbit app is compatible with most smartphones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:- Apple iOS 15 or higher.- Android OS 9 or higher.Syncing range: Up to 30ft.- Certain features like smartphone notifications may require Android 9+. Check your device compatibility.- Syncing requires Bluetooth® LE. an internet connection and location permissions granted on the phone Band SizeBoth small and large sizes included in box. Small: Fits wrist 5.1" - 6.7" / 130 – 170mm in circumference Large: Fits wrist 6.7" - 8.3" / 170 – 210mm in circumference Window SizeViewing area: 14.75 x 21.93mm / 1.04" diagonal Pebble dimensions: 36.78mm x 22.79mm x 11.2mm