Description: Fine conductivity and low contact resistance welding pen design ensures quickly detachment. Compact design makes it easy to put into your pocket and carry around with you. 6 gears of output power adjustable design allows you to adjust as needed. It is made of quality plastic and metal material. The length of this product is 14cm, the width is 8cm and the height is 4cm. It is suitable for home. Item Name: Portable Spot-welder Material: Plastic, Metal Gears: 1-6 Gears Welding Thickness: 0.1-0.15mm Battery: 3.7V, 5300mAh (Included) Features: Handheld, Portable, Adjustable Size Details: LxWxH: 14cm x 8cm x 4cm/5.51" x 3.15" x 1.57"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Instructions: 1. Press and hold for 3 seconds, the buzzer will sound once, turn on/off. 2. Press the button for a short time, the buzzer will sound once, change the gear, add one gear each time, 1-6-1 cycle, the 6th gear has the strongest welding strength. After pressing the button, observe the light, the number of times the light flashes is the number of gears. The gear will be automatically stored when it is turned off, and the default storage gear will be stored next time it is turned on. 3. After the welding pen is pressed, the buzzer will sound once, and wait for about 1 second to trigger welding. 4. When charging, the button light reminds in the form of a breathing light, and the light is always on when fully charged. The welding function is not available while charging. 5. If it does not work after working for a period of time, it may be that the power is too low, which causes the microcontroller to not work, the charging light does not light, and it does not turn on. At this time, it is charged for half an hour, and the voltage can be restored after the rise. Package Includes: 1 Set of Portable Spot-welder