Alice has 8 different vibrating modes, including SVAKOM's Intelligent Mode that adapts vibrations from the beginning all the way to the end with perfect pulses. Features dual independent motors for stimulation inside and out that are virtually noiselss. 100% waterproof. Fully rechargeable with a charge time of 1.5 hours for 2 hours of use. Measures 6.93 in. by 3.31 in. by 1.18 in.