Dayo is designed to free your hands. This automatic male stroker mimics real hand job but is more powerful and skilled than that. Smart-engineered with automatic clamping technology; with 7 sensuous wriggling clamping motions; the squeezing tightness on the tip of your penis and the vibrations to your sensitive shaft combined helps you reach the ultimate bliss, it knows how to please you where you want it most. Automatic clamping motions simulate real handjob. Warms to 113° F for lifelike sensations. 7 vibrating patterns and 7 wriggling clamping motions. One Year Warranty.