The ONE is a high-quality, reliable, and affordable wireless tattoo machine for artists at all stages of their career, made by the experts at FK Irons.

The FK Irons One is powered by a rechargeable and replaceable Panasonic NCR 18500A battery, offering 5-12 V of power for up to 8 hours, depending on the voltage used and cartridge size, with adjustments in 0.5 V increments.

The unique quarter-turn battery port allows for easy opening, enabling quick battery replacement without any complicated threading system. The ruby cap also features a battery disconnection function – turn the cap counterclockwise to prevent unwanted power usage. Batteries are charged via the included eFest two-slot battery charger, meaning you can always have a spare battery ready and waiting.

The simple display features a color-coded voltage indicator LED and is controlled by three simple buttons – two for increasing and decreasing the voltage, and one for turning the power on or off. Half-step increments are indicated by a flashing color LED.

Made from medical and aerospace-grade 6061 T6 aluminum, the ONE comes with a matte charcoal finish and a distinct ruby cap. The bulky grip has an ergonomic shape, including larger grooves to prevent rolling and increase comfort during work, and is compatible with all universal Cheyenne-type cartridges and FK modular grips.

The FK Irons ONE comes with a high-quality travel case with custom-cut protective foam, making it perfect for guest spots and conventions, and with the battery disconnection function, it won’t turn on accidentally during travel.

• Stroke: 4 mm


• Color: Charcoal / Ruby


• Material: Aluminum 601 T6


• Weight: 227 g


• Length: 134 mm


• Diameter: 38 mm


• Compatible with standard cartridges


• Made in USA