The worlds first and only wireless battery for Cheyenne tattoo machines!! Meet The JetPack Nitros! The next level of our battery series! More power, more control options, LCD display 5 presets! The battery now also fits comfortably on your machine. We did away with the L shaped connectors for this version. The quality and power has been doubled! 8-10 hours battery life per charge on each battery! All of these features jam packed into a 2oz battery!! ONLY COMES IN SETS OF 2!Specs: • 8-10 hour battery life• 2oz• LCD display with battery meter• 5 Presets with up and down buttons (4.5v,6v,8v,9.5v,11v)• Power button pauses and restart battery (at last setting)• Fits all CHEYENNE machines• Charging cable and  power block included• Gift bag with every set!• 30 Day Warranty! All Sales Final!