This is a kind of fine quality spot welding machine, compact size, lightweight and portable, easy to put into your pocket and carry around with you. 6 gears of output power adjustable, 1-6-1 circulate, welding more accurate. Copper pen rod with 10AWG multi-silicone-wire, humanized sleeve for safety use. Comes with high rate lithium battery, and it can continuously welding thousands of points on 0.1-0.15mm nickle sheet after being fully charged. Features: Compact size, lightweight and portable, easy to put into your pocket and carry around with you. Easy to use, one-button to on/off, very convenient. Fine workmanship with stable performance, can provides long service life. Low power consumption design, do not need to worried about run out of the battery when setting aside. 6 gears of output power adjustable, 1-6-1 circulate, welding more accurate. Long time press to boot, it will shows the last use gears, short press one time to add one gear. Self detect function, automatic trigger after welding pen contact the nickel sheet, 0.8s response time. Practical power management and software design, will not reset and non-return-to-zero while welding. Equipped with indicator light, flash-charge, standby-fully charge. Self-carried with charge manage control module, easy to charge your phone through following USB cable. Comes with high rate lithium battery, and it can continuously welding thousands of points on 0.1-0.15mm nickle sheet after being fully charged. Copper pen rod with 10AWG multi-silicone-wire, humanized sleeve for safety use. Specifications: Battery: 2 * 3.7V, 5000mAh lithium battery (included) Gears: 1-6 gears