1. Material: metal
2. Battery capacity: 5500mAh
3. USB output: 5V / 2.4A
4. Solder pencil wire: AWG10
5. Input voltage: 5v
6. Drive type: battery
7. Full charge soldering times: approx. 1000 points
8. Output voltage: 4.2V
9. Output current: 639A
10. Note: This product does not come with a charger, you can use your mobile phone charger to charge this product, so whether your country uses 110v or 220v voltage, you can use this product normally
11. Kit list: spot welder + 2 x spot welders + nickel foil + TYPE-C cable
12. Length of the pen: 320mm
13. Main body dimensions: 103 x 82 x 29mm
14. Weight: spot welding pen: 46g/pair, set: 470g

Features.
1. Portable spot welder with quick release soldering pencil
2. Integrated soldering pen with gold plated terminals for good conductivity and low contact resistance
3. Micro USB charging port for easy charging
4. Built-in high speed battery x 2, with excellent charging and discharging performance, more stable
5. Fine workmanship and good performance
6. Easy to use; long service life
7. Small and portable size design, easy to carry
8. One-piece gold-plated solder pen terminal, good conductivity, low contact resistance
9. Thickened pure copper tape, imported MOS tube, energy saving, longer service life

Instructions:
1. Please press and hold for 3 seconds. 1. Power on/off: Press and hold the button for 3 seconds, release the button after hearing the sound of power on, i.e. turn on/off.
2. Short press the button: if the bell rings, this is the gear change position. Press once to add 1 gear. 1-9 cycles, 9 gears for strong welding power.
3. Welding operation: from level 1, once the item is detected, the unit will start welding after 0.5 seconds. The power adjustment can be adjusted to suit different welding jobs. Possibility to connect a usb input if a high level goes into current protection mode and restarts.
4. Auto shut-off: after 15 minutes without any activity, the unit will automatically shut off.
5. USB output: the USB output will be activated automatically when plugged in. The unit will automatically cut off the power output once the output current is less than 50mAh. Short press to restore power output.
6. Error warning: if the device is faulty, the buzzer will keep beeping after powering up
7. Firmware upgrade: upgrade port is reserved for upgrading to new firmware