Main Features: Heart rate monitor : 1S with optical heart rate sensor, shows you heart rate with PPG, you can see the results more intuitively. • 10 days standby time : Top-level Bluetooth chip and military gravity sensor ensure 10 days ultra-long standby time for a full charging. • Call reminder : Mi Band 1S will tell you when a call comes, you never need to worry about missing any important calls. • Sports tracking : Track your sports, record steps, distance and calories, help you achieve your sports target. • Sleep monitoring : Let you know your deep sleep and shallow sleep, also APP will give you periodical evaluation, help you develop good living habits. • Silent alarm : Wake you up every morning, will not be late for work; Remind you with vibration, never worry about missing anything. • There is no alarm when the heart rate is beyond the normal range eneral Brand Xiaomi Bluetooth Version Bluetooth 4.0 People Male table,Female table Waterproof Yes Waterproof Rating IP67 Colors Black Screen No Compatible OS Android,IOS Compatability Android 4.4 / iOS 7.0 and above system Language English Battery Battery Type Lithium polymer battery Battery Capacity 45mAh Standby time About 10 days Special Features Functions Alarm Clock,Measurement of heart rate,Sleep management,Call reminder,Calories burned measuring,Steps counting,Distance recording Alert type Vibration Dial and Band Shape of the dial Elliptical Case material Magnesium-aluminum alloy Band material TPSiV Weight and Size The dial thickness 0.99 cm / 0.39 inches The dial diameter 1.36 x 3.7 cm / 0.54 x 1.46 inches The band width 1.3 cm / 0.5 inches Wearable length 15.7 - 20.5 cm / 6.18 - 8.07 inches Product weight 0.014 kg Package weight 0.105 kg Product size (L x W x H) 22.50 x 1.36 x 0.99 cm / 8.86 x 0.54 x 0.39 inches Package size (L x W x H) 10.00 x 10.00 x 3.50 cm / 3.94 x 3.94 x 1.38 inches Package Contents Package Contents 1 x Xiaomi Mi Band 1S Smart Watch, 1 x Manual, 1 x Charger, 1 x Box My item don\'t work, my item is broken,what can i do ? Method 1: there is a Instructions, please read the Instructions again, and try to solve it. Method 2: if the item is broken, please send us photo, we will help you solve it Method 3: if the item don\'t work, please send us video I have not received my order. What can I do? Method 1 : You can track your order with the tracking number given by the us, and we also tell your tracking web Method 2 : If you didn\'t receive your order and you Buyer Protection is about to end, please tell us as soon as possible, we will help you track and extend the protection date for you ( The tracking information will delay ) Method 3: You can contact local post office to get help, the post office can\'t contact you sometimes, you need to go to pick your package up yourself ( Please check your personal information after you place an order, the information include name, address, zip code, Tel Number / phone number

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