Fitbit Alta HR, Black, Large (US Version)
- Get the power of continuous heart rate in Fitbit's slimmest design yet-all day, during workouts and beyond. Alta HR contains a Bluetooth 4.0 radio transceiver. The operating temperature is minus 10 to 45 degree Celsius.
- With heart rate, you can better measure calorie burn, and use zones (Fat Burn, Cardio, and Peak) to find the right workout intensity for your goals..
- With sleep stages powered by PurePulse heart rate, automatically track your time spent in light, deep and REM sleep and take steps toward a better night's rest..
- See how working out more can improve your health by comparing your resting heart rate trends to your activity, Sync stats wirelessly & automatically to computers and 200+ leading iOS, Android and Windows devices..
- Automatically track your steps, distance, calories burned and active minutes with up to 7 days of battery life.
- Tap to see your stats, time & notifications on an OLED display, plus customize your clock face. Maximum operating altitude: 30,000 feet.
- Made of a flexible, durable elastomer material. The minimum and maximum circumference range between 170 - 206 millimeters..
- Buy with confidence when your Fitbit product ‘ships from and is sold by’ the following authorized Fitbit retailers: Amazon.com, Heart Rate Monitors USA ....