KNOG Blinder 1 Rear Heart Taillight 1 LED generates 11 lumens for 500+ meters Target Run Time (hrs): 2 constant, 11 eco flash USB Charge Time: 2.5 hours USB designed to be exposed to the elements Fully waterproof and wicked bright - 11 lumens rear 1 LED generates 11 lumens for 500+ meters USB Charge Time: 2.5 hours USB designed to be exposed to the elements Fully waterproof and wicked bright - 11 lumens rear