Direct Diode 3V 3.7V 520nm Green Line Laser Module Wave length: 510nm,520nm,adjust Green Line width DC3-3.7V operation .Working Temperature Range:-20 ℃ ~ + 40 ℃ Green Line laser,not DOT .Dimensions: D12 x 35mm 1PCS Adjust Focus Green Diode Laser Module Wavelength: 515nm, 520 nm,less than 1 mw Size: 12x35mm (without wire length) Beam divergence (full angle): < 2 radians Shape:520nm Green Laser Line Packing:1pcs Green Line Moudle