Fit bit Alta hr

About this Item 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 purpose heart rate, automatically track your time spent in light, deep and REM sleep and take steps toward a better night's rest Automatically track your steps, distance, calories burned and active minutes with up to 7 days of battery life (varies with use and other factors) Features: All day activity tracking with continuous heart rate Track calorie burn, heart rate, gauge workout intensity and get a picture of your overall health without an uncomfortable chest strap. Sleep tracking with sleep stages Automatically tracks how long you sleep, shows your time spent in light, deep and REM sleep, and has a silent alarm to help you wake more peacefully. Clear, bright OLED tap display Gives you instant access to stats, the time and smartphone notifications. Auto exercise recognition SmartTrack technology automatically detects and logs workouts to the Fitbit dashboard, so you get credit without ever pushing a button. Smartphone notifications Keeps you connected with call, text and calendar notifications on display. Syncs to select Apple, Android and Windows devices Such as iPhone, iPad, iPod touch and cell phones and tablets with Windows Phone or Android for simple wireless communication.