How to use the COZING-T04 laser acupuncture pen?
Pls turn the key to the green point, and check the battery + and - , whether place it well . Then press the power button, the laser will has the output . Green point is turn on the device, red point is lock the device
If no output, please charge the battery via the charger, please notice the + and -, in the charger also remark + and -, and insert the battery at the right position.
