Features: 1. Use 20 minutes just like filling the barbell 300 times. 2. Bionic micro-electric technology to achieve an autonomous muscular movement. 3. Only 6 weeks can improve muscle lines, 15 minutes a day. 4. Recommended usage times: 1 to 2 times a day and 10 to 20 minutes. 4 weeks per cycle 5. The shape is light and practical and very easy to use 6. To cancel the spare grease in order to arm more weight loss
Please note: When in use, if you have felt that the muscle has shrunk, don't worry, this is a normal condition.