Brand N/A Model F520 Quantity 1 Color Black + silver Material Albronze Laser color Green Laser Power 5 mW Wave Length 532 +/- 10 nm Excitation Mode Optical Pump Working Mode Continuous laser Working Voltage 3 V Spot Mode (Spot size) Starry sky Functions Easy to use only need to push the button then you can see striking green starry sky of light shoot forth; The light can point at any targets such as photos blackboard video monitors and so on; Best choice for teachers professors doctors backcountry travelers explorer and so on Battery Configuration 2 x AAA batteries (included) Packing List 1 x Laser pointer 2 x AAA batteries (included) 1 x English user manual