FK Irons One Tattoo Machine with Drop in Battery — 3.0mm or 4.0mm — Pick Color

I recommend this machine it’s very well made . But don’t force the batteries down there is a slight edge that the battery wrap can get caught on after a while it will chew up the wrap . You can buy 18500 wrap on eBay and insulator caps and re shrink the wrap with a hair dryer to get the most out of your batteries. The switches for voltage do have a lag but it’s not something that’s major