UPC 816137024037

• The minimum and maximum circumference range between 170-206 mm. Alta hr contains a bluetooth 4.0 radio transceiver. Operating temperature is minus 10 to 45 degree celsius
• Get the power of continuous heart rate in Fitbit's slimmest design yet-all day, during workouts and beyond. Issues like not syncing despite successful setup, not responding to taps despite being charged and not tracking your steps or other data can be corrected by restarting your tracker reboots the device but does not delete any data
• With heart rate, you can better measure calorie burn, and use zones 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
• Operating temperature: 14 degree to 113 degree fahrenheit Maximum operating altitude: 30, 000 feet
• Made of a flexible, durable elastomer material
• Buy with confidence when your Fitbit product 'ships from and is sold by' the following authorized Fitbit retailers: Amazon.com, Heart Rate Monitors USA and Clever Training. Fitbit does not guarantee the quality or authenticity of products purchased from non-authorized resellers on Amazon, and they are not eligible for warranty and replacement from Fitbit

The Alta HR Wristband is Fitbit's slimmest heart rate monitor, and while it's an excellent choice for fitness training, you'll end up wearing it a lot more than just at the gym, on the treadmill, or at the track. Its PurePulse obviously shines when you're working out thanks to better calorie burn tracking and more insight into your health than any Fitbit band has ever offered before, but Alta's SmartTrack auto-recognition also records how many miles you walked or commuted for a complete registry of your overall fitness. This smart little wristband also records your sleeping habits throughout the night, syncs with your smartphone to deliver calls and texts, and will remind you to move if you've been slightly slothful. The customized clock and replaceable bands let you find a look and style that best suits you. Syncing range: Up to 6.1 m, Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth LE will need a wireless sync dongle in order to sync. Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.4 and later, and Windows 10 devices. Care: Alta HR is rain, sweat and splash proof, but not shower or swim proof. If your tracker gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then, and regularly clean your band and wrist.