Wireless Battery Tattoo Pen Supply Specification: 1. 100% brand new and high quality 2. Type: Tattoo Rotary Machine Pen 3. Material: Space Aluminum Pen 4. Size: approx 131x30x30mm 5. Grip Size: 30mm 6. Working Voltage: 5-12V 7. Rpm Range Stitches: 8V-9000r/m 8. Switch Frequency: 55-165Hz 9. Stroke Length: 3.5mm 10. Motor: Coreless Motor 12. Motor speed: 12V - 10500RPM Feature: This cartrilage is cnc-Machined by aircraft Aluminium alloy and then anodized finish. Non-slip handle design, lightweight and exquisite. The motor parts can be disassembled and replaceable. The advanced gear system guarantees reliability and quiet operation. Product parameters: 1. Material: aluminum alloy + acrylic; 2. Charging time: fast charging, 1.5-2 hours can be fully charged; 3.Using time: Under normal 8V voltage, the voltage stable state can last for more than 5 hours,long time working the voltage is stable; 4. Lcd display content: output voltage range + battery usage; 5. Lithium battery capacity: 2000 mAh capacity; Instructions for use: The device is a tattoo power supply, with input port, output port, built-in lithium battery, external switch button, voltage adjustment button, lcd screen, and specific functions are as follows: 1. Power on: press and hold the middle O key for 5 seconds to power on, and then press and hold for 5 seconds to power off; 2. Pause: during normal work, press the O key for a short time to pause the work, and then press to resume the work; 3. Adjust the voltage: pushing the "" or "" key to adjust the gear, corresponding to 1-8 gears respectively representing 5-12V; 4. Battery display: It is displayed on the lcd screen; Power parameters: 1. Input: The charging port is powered by a USB data cable. The built-in battery is 3 pcs, 550mA / block, 3.7V battery, and the output current is fixed at 1A; 2. Output: Voltage range: (1-8 range corresponds to 5-12V) pushing "" or " " button to switch the voltage range, 5V is the lowest voltage, and 1 level corresponds 5V, 2nd gear corresponds to 6V, and so on 8th gear corresponds to 12V; 3. Power storage: fast charge through the matching fast charge USB data cable. Normally, it can be fully charged in 1.5-2 hours. It is fully charged with 4 grids. It can be used for about 5-6 hours when the 8V is turned on. The voltage is stable. The last battery charge needs to be recharged to ensure the use time.