Q-BAIHE Adjusted Violet Blue Diode Lasers 405nm 50mw Dot/Line/Cross Module with Heatsink Wavelength: 405nm, Output Power: 50mw Working Voltage: 5V (red wire for postive +, black wire for negative -) Laser Shape: Dot/Line/Cross, Material and Color: Metal, Lens: Plastics Dimensions: 12 x 45mm (or sometimes 12 x 35mm according to factory batch) It is a 405nm 50mw adjustable laser module with three caps:Dot line and cross.You can change the caps to get different effects: dot line and cross,which is shown in the main photo.