With a choice of 3 different sucking speeds, this pump always delivers! At the touch of a button, this Automatic Cyber Pump will create a super strong vacuum, giving a quick and powerful erection. The super-soft masturbation sleeve magnifies the view of your penis for unmatched visual stimulation. The pump always creates a tight seal for comfortable but very effective suction! This high-tech pump is really easy to disassemble and clean. Standing 12.2" tall and with a chamber that can hold a length of 7.9" it revs up to an impressive 3700 RPM at a very low noise level of less than 55dB. The inner girth is 2.4".The built-in rechargeable battery needs 120 minutes for a full charge giving 120 minutes of fun playtime! This pump is NOT waterproof.