Use the Cheyenne Power Unit I to start up your Cheyenne Hawk machine reliably and with ease. While other standard power supplies may require the Start-Up Facility Cord, the PU1 has a built-in starter cable chip that makes it possible to get your Hawk machine running at 4-6V. The stroke frequency can be easily adjusted and regulated with this power supply during the working process, between 60 to 160 strokes per second. The digital, touch-screen front and its compact size makes the PU1 ideal for travel, storage, and an overall hygienic tattooing process. The Cheyenne PU1 comes with a single output for one tattoo machine and a wall power adapter cord.