The Street F-500 light set has 6 lighting modes with a maximum front output providing 500 lumens for 1.5 hours, to 24 hours on flash. Daytime Pulse modes in both the front and rear R-45 lights attract drivers attention to keep cyclists safe at all hours. Features: Lights feature 6 lighting modes including daytime pulse and night time pulse Headlight is water resistant and lightweight, weighs only 52 grams Lights feature side illumination ports allow cyclists to be seen when riding across traffic lanes Power saving function- 10% power or less, lights will automatically switch to lowest lumen output Specifications: Brightness: 500 Lumens (Front), 45 Lumens (Rear) Battery Type: Rechargeable (USB) Run Time: 1.5 - 24 Hours (Front), 1.5 - 12 Hours (Rear) Beam Color: White, Red Color: Black Weight: -