Features: OLED screen directly displays spots welding parameters, easy to operate and use, double pulse strong spots welding, easy spots welding 0.3mm nickel plated sheet and 0.2mm nickel sheet. Super Farad capacitor charging protections, effective balance of two capacitor voltages, multiple MOSFETs inparallel, gold plated conductive brass block, strong current release. Two strings of 5.4v 1500f super Farad capacitors, excellent quality, no need for regular charging maintenance, durable, 7AWG soft silicone wire, replacable pen needle, easy to use, reduce loss cost. Automatic trigs spots welding, no additional step, greatly improve the efficiency of spots welding, Typec andDC charging interfaces, a variety of charging methods. Spots welding modes Settings, Chinese & English display Settings, automatic shutdown time Settings, buzzer switches Settings, etc. Specifications: MaterialPCB Standard: European/US(optional) Model: K7PRO (8 MOSFET) Display: OLCD display +LED light Spots welding thickness reference: 0.05-0.15mm nickel sheet. 0.05-0.3mm nickel plated plate CHGLED: charging indicator light, red light in charging, full green light Balance LED: balancing function, the red LED light automatically open the balancing function. The balance is closed automatically Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xHigh Power Capacitor Control Board