nm Green Beam Laser Stage Pen with 5 Different Laser Light Patterns Built-in Battery (Red)<br>Highlights<br>The first of the world USB direct charge lithium green / green laser pointer pen、 without having to install the battery、 the computer directly with a USB socket charger、 mobile power charger、 power strip power charger direct charge of heat generated naturally large、 pro using continuous light in the summer about 30 seconds off a little longer to open、 is conducive to longer product life! for a gift with 5 in 1 pattern head.Built-in laser module to improve cooling devices、 circuit board protection design collection (good for the domestic transformation of the current laser circuit board defect conducted)<br>1. Pen-shaped design、 lightweight and elegant! Easy to use built-in lithium battery USB charging.quite convenient and easy to take in daily use<br>2. Fine copper made、 rubrones surface treatment、 feeling comfortable<br>3. Foot power、 clear and bright beam of light at night、 light distance up to 5km<br>4. With pen screw caps、 fixed focal point、 the light beam continuous shootout、 we provide various patterns (5 patterns correspond with 5 different laser light patterns)<br><br>Functions<br>1. Teacher / lecturer - for classroom teaching、 it is like a pointer infinite、 at any corner of the classroom you can easily refer to the planning board and be absolutely an assistant for teachers<br>2. Business person / Conference Spe