JT-C707 Energy ball with counter
Product Details
| The ultimate in engineering design work featuring the same user friendly features and incorporating an on board generator. 1.Wrist and finger grasp strength. 2.Forearm's muscles strong. 3.The vibration of your arm makes blood circulation well. 4.Prevent from carpole tunecl syndrom. |
Internal gyroscope reaches up to 8,000 rpm displaying with speed meter,Power cord included
Increase your wrist strength while
- Country:China (Mainland)
- telephone:86-20-82216831,82215110
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Internal gyroscope reaches up to 8,000 rpm displaying with speed meter,Power cord included Increase your wrist strength while |
