Fitbit Alta HR, Blue/Gray, Small (US Version)

Get the power of continuous heart rate in Fitbit's slimmest design yet-all day, during workouts and beyond
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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.
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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.
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See how working out more can improve your health by comparing your resting heart rate trends to your activity.
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Automatically track your steps, distance, calories burned and active minutes with up to 7 days of battery life. Syncing range: Up to 6.1 m; Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth 4.0 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 . Operating temperature 14° to 113° F

• AK Replacement Bands Compatible with Fitbit Alta Bands/Fitbit Alta HR Bands (10 Pack), Replacement Bands for Fitbit Alta/Alta HR (10 pcs-a, Small)
• TOMALL Replacement Bands for Fitbit Alta HR and Fitbit Alta, Mesh Adjustable Replacement Accessories with Magnet Lock for Fitbit Alta/Alta HR (Silver)
• TOMALL Metal Bands Compatible for Fitbit Alta HR,Stainless Steel Metal Magnet Replacement Bands for Women Men
• (6-Pack) RinoGear for Fitbit Alta HR Screen Protector (Also Works for Fitbit Ace/Alta 2016) Case Friendly Screen Protector for Fitbit Alta HR Accessory Full Coverage Clear Film
• Supershieldz (6 Pack) for Fitbit Ace and Fitbit (Alta HR) Screen Protector, (Full Screen Coverage), Anti Bubble High Definition Clear Shield
• Vancle Bands Compatible with Fitbit Alta HR and Fitbit Alta, Newest Sport Wristbands with Secure Metal Buckle for Fitbit Alta HR/Fitbit Alta
• TOMALL Metal Bands Compatible Fitbit Alta HR,Stainless Steel Metal Magnet Replacement Bands for Women Men (Black)
• Wekin Replacement Bands Compatible for Alta HR and Alta, Breathable Sport Silicone Wristbands Bracelet with Secure Metal Buckle for Woman Men
• SWEES Bands Compatible for Alta HR Alta Women Small Adjustable Metal Stainless Replacement Elegant Jewelry Design Dressy Bracelet Diamond, Rose Gold, Silver, Black
• Tobfit Replacement Bands Compatible with Alta/Alta HR/Ace, Classic Replacement Bands with Secure Metal Buckle for Women Men Kids, Champagne Gold, Silver, Rose Gold, Black, Small