With the TOYJOY Manpower Automatic Power Pump, you can sit back, relax, and enjoy hands-free pumping pleasure. The whisper-quiet operation and adjustable intensity modes provide an incredibly effective experience, whether for pure enjoyment or endurance training. With the ruler engraved on the tube, you can easily measure your progress. This pump can also be a great help for erectile dysfunction. Last but not least, it is rechargeable and cordless with a long-lasting battery. Enjoy a next level of pumping power with this automatic pump.