The G-Force Pump is a step up from the Mojo Penis Pump. Instead of squeezing the pump with your hand, you simply press a button and the battery operated pressure guage does the work for you.
There's a PS reader to let you know exactly how much pressure you are applying and the simple button function works well for those who don't like to manually squeeze their hand.
8.5”x 2.5”/ 21.5 cm x 6.25 cm cylinder