laser pointer pen

Green laser pointer,laser pen,green laser pen,laser pointer pen,green laser presenter, high power green laser pen pointer,green laser pen with star > Perfect for astronomy, Presentation, Tutorial, and Office Meeting use > Brighter than red laser pointers, high powered 5mW Green Laser Pointer > Utilizing the latest technology in green laser > Casematerial :Brass > Solid, heavy duty construction > Dimesion : 162*13.5*13.5mm > Power : 2 x AAA Batteries > Output power : 5mW-200mW > Warm-up time : < 5 minutes > Beam distance is over 3500m in darkness,open area > 5mm beam diameter at2m distance > Constant wave output (as opposed to pulse output) > Operating lifetime : 3000 to 5000 hours > Operation temperature : 20°C - 30°C > Storage temperature : -10°C - 50°C > Warning : Avoid direct eye exposure