Product Description for Good quality bluetooth speed jump rope, crossfit jump rope :

1. Recording skipping loops.

2. Recording skipping frenquency.

3. Recording skipping exercise time.

4. Recording calorie burned while skipping exercising.

5. Long time history records of sport data, which can be checked on the app.

6. Bluetooth 4.0 wireless data transmission technology.

7. CR2032 replaceable battery.

8. Suitable for fitness and sport.

9. Working with iOS devices,  iPhone 4S and above, New iPad/ iPad4/ iPad mini, iPod Touch 5, etc.

10. Jump rope is easy for user to operate it.

11. Good quality bluetooth jump rope