ETEK Electric handheld MassagerThis muscle massager is made of ABS material and available in green, black, red, and silver color options. The muscle massager is powered by a 1500mAh rechargeable battery with a charging voltage of 5V and a charging time of 4 hours. It delivers a rotation speed of 1800-3200 revolutions per minute (r/min) for deep tissue penetration. The muscle massager has a rated power of 25W and a rated frequency of 20Hz for consistent performance. It comes