99 gears for precise gear adjustment, high-speed single-chip intelligent , real-time display of battery voltage and spot welding strength can be seen. MOS tube*8 spot welding current up to 2400A, more penetrating welding spot and more beautiful. 3-digit LED digital display The gear voltage alarm is clear at a It is both a spot welder and a voltmeter. Support spot welding of 0.1-0.2mm sheet, the welding is more transparent and clean. Built-in 12-bit high-precision , voltage measurement accuracy can reach 0.01 Voltage testable range: 8-24V, automatically display voltage when connected to the power supply. Type: spot welder Product model: GX591 Working voltage: 8V-24V Working current: Less than 20ma Standby power consumption: Less than 0.5ma Welding sheet thickness: 0.1-0.2mm (related to battery discharge energy) Welding current: 2400A MAX color:Black Material:PCB size:89 x 54mm Package Contents: 1 x Control Panel 1 x Sheet 2 x Spot Welding Pen 2 x Connection Cable 2 x Heat Shrinkable Sleeve 4 x Screw 4 x Nuts Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.