Feature:
About heart rate: If it is not accurate, please check if there is a gap between the watch and the arm.

If you have any questions, please contact us by email, we will definitely help you to solve.

Technical specifications:
- Item Size: 4 * 1.9 * 1cm (L * W * H)
- Bracelet size: 26 cm length
- Battery: 70mAh Li-ion battery
- Use time: 4-5 day
- Charging time: 2hrs
- Warning£ºWaterproof in daily life, but not in shower, swimming, diving

About our product:
- Accurate recording and feedback the daily goals
- Pairs with heart rate monitor for fitness activities
- Monitor sleep automatically and wake with a silent alarm
- Track workouts, heart rate, distance, calories burned, active minutes and steps
- Smartphone Finder, lose alarm
- Remote control selfie

Compatible with:
Android Phone 4.4 or later: Samsung Galaxy S6 S6 Edge S7 S7 Edge NOTE 5 4, Nexus 5X 6P, Oneplus One Two, HTC M8 M9, Sony Xperia Z4 Compact Z5 Z5 Compact etc.
IOS 7.1 or later: iPhone 4s 5 5s 5c 6 6s 6 Plus 6s Plus.

Package includes:
1* Smart Bluetooth bracelet
1* USB charging cable
1* User guide