Micro Needle Derma Machine Skin Rejuvenation 6 Gears Electric Micro Needle Pen 100‑240VUS Plug Item Type: Derma Machine Gear: 6 gears Battery type: Lithium battery Battery capacity: 2000mAh (Shipped with built in battery) How e:  1. Charging: Connect the device to the charging cable and adapter, insert the adapter into the socket, and the battery indicator (1-9) and indicator lights on the device's digital display will flash at the same time. After the battery is fully charged, the digital display will display F, and the indicator light will always be on. Devices can be charged while working. In the power off state, press the button once, the screen will display the power for 1 second. 2. Power on: Press and hold the power button for 2 seconds, the digital display will display the power. After 2 seconds, the digital display shows the gear position. Display the number "1". 3. Shutdown: Press and hold the power button for 2 seconds. 4. Speed ​​adjustment gear: In the power on state, press the power button, the number displayed on the digital display changes from gear 1 to gear 2. Press the power button again. The numbers change from 2nd gear to 3rd gear and so on, up to 6th gear. (6 gears, from the lowest speed to the highest speed) 5. Battery exhaustion reminder: In the state of running out of power, the digital display will display the number "0" and indicator light that flash at the same time. Adjust the length of the consumables: You can adjust the length of the needle by turning the scale ring clockwise or counterclockwise. Rotate counterclockwise, and the length of the needle will gradually become longer, and if it is rotated clockwise, the length of the needle will gradually become shorter. How e consumables: 1. Remove consumables in sterile packaging for sterilization. 2. Insert the consumables into the installation part of the equipment consumables. 3. Rotate the consumable clockwise horizontally until it clicks into place. 4. Adjust the scale adjuster to select the required length of use. 5. To take out the consumables, turn the consumables horizontally counterclockwise until they are taken out.