Features: brand new and high quality Compact size, lightweight and portable, easy to carry around with you. The housing is made of hard alloy material, wear resistance and can provide long service for time. Humanized design, one hand easy to master integrated welding pen, easy to grasp, no need to learn, no need for professional skills can also be familiar with the use OLED display, you can see the delay for time, power gears, remaining electric quantity, battery voltage, battery recharging current. It has strong conductivity. Fine workmanship. Easy to use. Specifications: Material: alloy Size:8.2x14.8x2.7cm/3.22x5.82x1.06inches Battery Capacity:10600mAh Package Includes: 1 Set Spot Welder 20 Gears Adjustable Spot note: Please allow 0-3mm errors due to manual measurement, make sure that you do not mind before you order.