... such as scraping, tapping, kneading, rub, vibration, manipulation, one can feel the most relaxation;3. Built-in mini aviation button lithium battery ... speed & power levels and time, and finely higher-grade materials, feel easy and good to operate.5. 20 intensity level adjustment ... your choice6. 60-minute automatic stop timer, make you feel ease and be assured7.Controller adopts high-tech chip, large ...