Kryptonite -
The Alley F-650 packs 650 lumens and has side illumination ports to allow you to be seen when riding across traffic lanes. The Alley F-650 also has handy features such as memory function which turns the light on at the last mode it was turned off. Avenue F-650 modes include high steady, medium steady, low steady, daytime pulse, nighttime pulse and economic flash Fully USB rechargeable - no batteries to buy or replace Run time 2 to 26 hours for the Street F-650 WITH 6 light modes and 2.25 to 11.25 hours for the Avenue R-50 COB with 6 modes 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 Battery: Rechargeable Recharge Type: USB Lumens Front: 650