The Knog Blinder Square rear light, using new COB technology, produces a punchy 200 lumens that will ensure you\'re seen and safe in all light conditions. It features a grid pattern that makes this Blinder one of Knog\'s most individual lights ever. The graphic flash pattern has 8 different modes and is also available as a rear light to make a unique pair.The Blinder Square has integrated USB recharging, is 100% waterproof and has a whopping 60 hour run-time when using eco flash mode.