The Avenue R-45 features handy mounting options and multiple modes providing up to 12 hours of run time with easy USB charging. Features: Modes include high flash, low steady, daylite pulse, nitelite pulse and economic flash Fully USB rechargeable - no batteries to buy or replace Side illumination ports allow cyclist to be seen when riding across traffic lanes Memory function-light turns on at the last mode it was turned off Power saving function- 10% power or less, lights will automatically switch to lowest lumen output Run time: 1.5 hours (High Flash Mode) 2 hours (Low Steady Mode) 3 hours (Daytime Pulse Mode) 5 hours (Nighttime Pulse Mode) 12 hours (Economic Flash Mode) Specifications: Brightness: 45 Lumens Battery Type: Rechargeable (USB) Run Time: 1.5 - 12 Hours Beam Color: Red Color: Black Weight: -