‘1. After putting the correct battery, please use the key to unlock the laser firstly and then press the button. If the laser fails to work, please flip the battery to try again. Sometimes, it will work if you flip the battery.
2. The Green laser pointer pen will be slightly affected by temperature, especially during winter. If outdoor temperature is low, warm up the laser pen for 5 minutes.
3. Avoid direct eye exposure to laser beam
4. Please do not keep open for a long time as the light bulb may not function effectively.
5. If you want to light a match, adjust the focal length to the largest, and then keep the match at a distance of approximately 10 cm from lamp holder, and try a couple of times
How to Light Matches?