Check the listing for details. Wireless Tattoo Rotary Pen Brushless Machine Precise Control With Ring Switch. Condition: New. Listed at 129.00 USD. Features1. MC-A1 wireless rotary pen machine has an LCD Screen. You can see all the data on one screen. It can be compatible with 99% Cartridge Needles. The product is not capable of emitting radio frequency energy.2. MC-A1 wireless rotary pen machine uses brushless motor. 3. The stroke length is 3.5mm. It is good for lining, shading, and color packing. 4. Needle Depth Adjustment: 0-5mm. Adjust the needle length to rotate the bottom of the grip. 5. MC-A1 rotary machine is made of Aircraft-grade Aluminum. It is light, quiet, and powerful.6. This wireless machine has a 1450 mAh Battery. It can last up to 4-6 hours.7. The voltage is between 5v - 12 V. 8.Features：Jump Start Mode allows the tattoo pen to start easily at 5V