1 Product have english version,large quantity you can make your logo .

2 Charging time: 2hours

3 Work Time:6 hours

4 Product Type :Rechargeable lithium battery

5 Unloaded speed:188-3200 min max

6 Vibration speed have 1-6 levels

7 Vibration Frequency:20.0/26.7/33.3/40/46.7/53.3HZ

8 Battery capacity : 1300 mAh 1500mAh 2400mAh 1600mAh