nm 303 Green Beam Gypsophila Pattern Adjustable Focus Laser Pointer with Holder (Blue)<br>Features<br>1. Adjustable focus、 burning matches / lighter tobacco / cutting / burning capacity: Light firecrackers、 burst balloons、 burning plastic bags<br>2. Please remove the batteries when long time no use. After turn on the laser flashlight、turn the focusing head to make spot larger and will form the focus on the light beam mouth、the larger the spot、 the closer the focus away from optical port、 on this time u find focus you will burn things (Note: Focus on the beam the range of movement is limited、 the novice may hard find the exact focus so that they can not light. Need to be more familiar with the products. Before dispatch out、they will test all the related functions)<br>3. Increase the optical port protection and double insurance <br>4. Blue high brightness LED work instructions<br>5. Anti-battery reverse devices<br><br>Green indicator<br>Also called star pen、laser pen、 laser pointer、green laser pen、 Handel laser pointer.because it has a very intuitive visible strong beam、named for the role of indication.because of its bright beam、strong light interference、 it is increasingly used for teaching / astronomy star、its fixed orientation let the laser lovers / astronomy enthusiasts、 outdoor enthusiasts prefer as a equipment.also as a top grade gifts to our friends<br><br>Functions<br>1. Teacher / lecturer - for classroom teaching、 it