Green Laser Key chain <5mW USD22/PC 6-10mW USD23/PC Wavelength:532nm Output power:<5mW,6-10mW Battery:3pcs LR44of mercury batteries Dimesion:￠13.5*67mm Colour:Silver MOQ:200 pcs Weight:48.0g Function: Green laser Point Spot:Beam spot diameter 10m<15mm(<5mW).10m<18mm(6-10mW)