With 10 powerful functions of synchronous vibration PLUS thrusting action, some users may be intimidated by the options, but put your fears aside. Just rotate through the options until you find the setting you like, and the state-of-the-art memory chip will resume with the last function you used, every time. No more fumbling before tumbling, get right to the point! For people with more varying tastes, have some fun with it you can cycle through the options as many or as few times as you would like. This travel-sized stimulation station is RED Certified, certificate included and USB rechargeable. A full charge takes 90 minutes, and low speed will last 80 minutes.