Check the listing for details. Wireless Tattoo Machine Pen Battery Pack Coreless Motor Touch Screen LED RCA. Condition: New. Listed at 49.99 USD. Wireless Tattoo Machine Pen Battery Pack Coreless Motor Touch Screen LED RCA Product description： Wireless rotary tattoo pen machine has visible OLED voltage screen, easily adjustable voltage. · This machine weight: 180g, length: 133mm, diameter: 32mm. Takes 3 hours to full charge, runs for upwards of 8 hours. · The machine pen has standard 3.5mm stroke length, cordless motor, work as a liner or a shader. Effortless to cover and protect. Efficient cartridges change and replacement. · This wireless tattoo pen advanced gear system that smooth, soft, and quiet operation, Ideal healing results. Flexible and lightweight for every style Gently and smoothly transfers ink to skin; suitable for all skin types. Specification： Battery capacity：1800mAh Charging time ： 2.5-3 hours Working time：7-9 hours Stroke：3.5mm diameter: 32mm length: 133mm Handpieces weight: 180g Battery weight：150g Working voltage：5-12v Motor Max speed: 12500rmp Package include: Black/red/dark green tattoo pen package :1pc wireless tattoo Pen 1pc type-c charging cord 1pc RCA adapter1pc box Battery package: Only the battery part. FAQ: Q: Can it adjust needle length? A: Yes,rotating click grip. Q: Where do I buy the cartridges for this? A: Any cartridges will work pretty much. But i recommend to buy it from the same buyer. Q: does this have an option for a wireless foot switch? A: Yes, it has a RCA conventer inside, if you don’t wanna work with the wireless power supply, you can use the conventer to connect with the normal tattoo power supply.