Fenix BT20 Bike Light

BT20 is a specially designed professional bicycle light for bicycle enthusiasts. It delivers a max 750-lumen output.
Employing the pioneering dual distance beam system, the upward beam of BT20 is refracted by the lens, forming an auxiliary beam in the front area of the wheels where ordinary bicycle light can not reach. With its advanced aspherical reflector design and broad beam distance up to 156m, it can bring the users a broader view in the night riding.
Features:
Utilizes Cree XM-L（T6 ）LED, max 750 lumens output
Powered by two 18650 rechargeable Li-ion batteries or four CR123A Lithium batteries
Uses aspherical reflector, with a wide beam angle
Anti-glare lens design produces a safe dual distance beam illumination
4 brightness levels and one flashing mode
Digitally regulated output - maintains constant brightness
Power indicator on the headlamp
Quick to attach and detach using O-ring mounting straps sized for 20mm-35mm handlebars
Able to adjust the direction of the headlamp freely
Made of aluminum alloy and quality plastic
IPX-6 waterproof