Direct Diode 3V 3.7V 520nm Green DOT Laser Module Wave length: 520nm. Output power: Class IIIa – less than 5mW DC3-3.7V operation .Working Temperature Range:-20 ℃ ~ + 40 ℃ Green DOT laser,not LINE .Dimensions: D12 x 35mm 1PCS Adjust Focus Green Diode Laser Module Wavelength: 515nm, 520 nm,less than 5mw Size: 12x35mm (without wire length) Beam divergence (full angle): < 2 radians Shape:520nm Green Laser Dot Packing:1pcs Green Dot Moudle