X2 Wireless Tattoo Machine Pen High Capacity Battery Body Art Permanent Accessories for Beginner Tattoo Supply. Name:X2 Motor Type: IRONCORE MOTOR Stroke: 3.5mm Speed: 12V/12000RPM Operating voltage: 5-12V Battery Capacity: 1700mAh. Charging Time:2hrs Working Time:7hrs. Weight:210g Diameter:34mm Length:140mm. We are professional mamanufacturer and we also have trade company to do hair extensions business.We will quote you a best price. Professional & efficient customer service team are ready to help you. We will try our best to solve the problem for you. If we cannot help you through emails, we will give you return instructions.