1. Bluetooth 4.0, transfer data to APP via Bluetooth;
2. Record data such as skipping number, exercise time, skipping speed, calories, fat burning, etc .;
3. APP sports goal setting: free jump, number countdown, time countdown, can record training data for each time;
4. Historical record: record the historical record of dayly, weekly, monthly and yearly;
5. Friends PK: 6 friends atmost now ( will have more in the future).
6. Ranking.
Amended some language mistakes
9Apps 4.9
