Cyclops Tilt LED Hat Clip Light with Interchangeable Light Module. --Comes with two snap and lock interchangeable light modules. (White and Green). -- Lights tilt to a maxiumum of 45 degrees to all you to adjust the flow of light to your work area. -- 5 super bright LED bulbs in each module never need replacing. -- Contoured shape to fit cap brims securely. -- Top mount design does not obstruct line of vision. --LIghtweight - does not throw off balance of your cap. --Simple on/off button that is easily accessable on top of unit. --2 CR-2032 Lithium batteries included. Imported.