Dear Customer, pls refer to the 6th picture on the listing for knowing how to sync the product. Pls read carefully our service letter in the picture and feel free to contact us if you meet any problem during use the productHeart rate monitor Input the heart rate warning value according to your own physical condition, and it will help you monitor your heart rate under "regular mode" or "monitor mode" and give you warning signal when the value is abnormal Product Description Functions: Heart rate monitor, Steps Counting, Find Your Phone, Camera Remote Control, Call Reminder, Calories Burned Measuring, Sleep Management, Vibration, Goal completed reminder, Alarm clock Bluetooth version: Bluetooth 4.0 Waterproof: YES (Living Waterproof) Waterproof Rating: IP67 Colors: Rose Red, Grey Screen: YES Screen Type: OLED Screen Size: 0.86" Screen Resolution:96x32 Battery Type: Lithium-polymer Battery Battery Capacity: 45mAh Standby Time: About 5 - 7 days Language: German, Italian, English, Simplified/Traditional Chinese, Spanish, Swedish, Japanese, French, Dutch Fit For: iphone 4S or above (iphone 4S, iphone 5, iphone 5S, iphone 5C, iTouch5, ipad3, ipad4, ipad air, ipad mini etc IOS 7.0 or above system) Android 4.3 or above, Bluetooth 4.0 Not Fit For: Lenovo, TCL, Asus phone Shape of The Dial: Rectangle Case Material: PC Band Material: TPU Size: Device Size: 40mmx18mmx12.9mm Package Size: 95mmx95mmx28mm Package Contents: 1 x Smart Wristband,1 x Chinese and English Manual,1 x USB Charger
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