The Street F-300 headlight has 6 lighting modes with a maximum output providing 300 lumens for 2 hours, to 24 hours on flash. Daytime Pulse modes attract drivers attention to keep cyclists safe at all hours. Features: 6 modes including Daytime/Night time Pulse for greater visibility 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 Memory function-lights turn on at the last mode it was turned off Specifications: Brightness: 300 Lumens Battery Type: Rechargeable (USB) Run Time: 2 - 24 Hours Beam Color: White Color: Black Weight: -