Fenix Wholesale 350 Lumen Bike Light AA Cree XM-L (T6) LED Powered by four non rechargeable CR123 or two rechargeable 18650 batteries Uses aspherical reflector with a wide beam angle Anti-glare lens design produces safe dual-distance beam illumination 4 types of output 80 lumens (6 hrs)/200 lumens (3.75 hrs)/350 lumens (2.25 hrs)/flashing mode - 200 lumens Mode memory remembers last used output level (except flashing mode) Digitally regulated output - maintains constant brightness Overheat protection function reduces output to protect the LED Power indicator on the lamp unit Quick to attach and detach using O-ring mounting straps sized for 20mm-35mm handlebars Full left-right adjustment of lamp head for perfect beam alignment Made from aluminium alloy and quality plastic