A green laser pointer light is perfect for teachers showing students and astronomy clubs for public viewing. Easily explain and show constellations and stars without pointing your finger. With a green laser pointer showing and teaching becomes simple and easy. Great for telescope alignment. The beam is visible in even a slightly smoky environment.
DANGER : Laser Radiation. Never look directly into the green laser beam. Never point a green laser beam at a person. Do not aim the green beam at reflective surfaces. Do not allow children to use green laser pointers unless under the supervision of an adult.
Use your Laser Pointer to pointer at any desired targets, project screens, or video monitors, presentations, museum and tour guides, point at the stars, and inspection.
Quick convenient push button switch.
Solid, heavy duty metal construction. Color: Black / Gold.
Caution : Avoid direct eye exposure to laser beam.
Dimension: 160mm(Long) 23mm (dia) 
Output Wavelength: 532 nm + - 10 
Output Power: < 100mW up
Working Voltage: DC 3.7V 
Working Current: 4200mAh 
Working Temperature:  +0℃~+35℃.
Storage Temperature: -10℃~+40℃ 
Body Materila: Aluminum Alloy
Laser safety: Class IIIB
Weight: 120g with battery
Batteries type: 1 x GH18650 Li-ion Rechargable battery