The Nucleus is the worlds first completely adjustable wireless power supply. It is completely independent of foot pedal or docking bases. The Nucleus Weighs in at only 1.7 oz and has a run time up to 8 hours!! With 27 output adjustments you have full control of power just like a conventional power supply, starting from 4v and going all the way up to 12v. They come in a two pack so you get up to 16 hours of tattoo time. Say goodby to your cords and welcome to the future of tattooing !!