The Avenue R-50 COB is a great tail light for commuting. 50 lumens with side illumination ports allow you to be seen when riding across traffic lanes, and handy features such as memory function which turns the light on at the last mode it was turned off. Don't worry about having to buy batteries, the built in battery indicator will let you know when your battery needs to be recharged by USB. 

FEATURES

• Fully USB rechargeable - no batteries to buy or replace
• Modes include HIGH FLASH, MEDIUM STEADY, LOW STEADY, DAYLITE PULSE, NITELITE PULSE and ECONOMIC FLASH
• FULLY USB RECHARGEABLE — No batteries to buy or replace
• Run time up to 11 HOURS 15 MINS
• 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
• Built in battery indicator- Red illumination = lower than 25%, Green = fully charged