4 Bright White LEDs for the Fronts of the Bicycle, Red flashing for Rear * Head Light Dimensions: 4 1/2" X2", 4 AA Batteries ( Not Included) with Mount * Tail Light Dimensions: 4 1/2" X2" 2 AA Batteries (Not Included) with Mount * 3 Stage Switch (1) Rapid Flashing Lights (2) Steady Flashing Lights (3) Steady Red Light * Tail Light Super Bright LED Emits a Powerful Beam whcih is Visible from 2,500 Ft