Made of medical grade silicone & ABS, safe, odorless and ultra-comfortable. With IPX7 professional waterproof grade design. Internal lithium battery, using a new type of magnetic absorption charging. Also built in powerful silent motor, working noise≦36dB. Enjoy 7 frequencies 6 speeds of vibration and ergonomically designed with shockwave design which can effectively stimulate G-spot, arousing most intense orgasms and sexual pleasure. Constant temperature system design (104℉), let you feel the real sexual pleasure with the sense of temperature. Easy to operate with 3 button: Switch Key ,"▲"&"▼" to adjust the frequency & temperature.