FEATURES: BLITZ Mode to make sure you are seen day or night Versatile Mounting System: Action-camera style of mount so that it can be mounted to virtually any bar size, as well as to many helmets Can be mounted to bar sizes 25.4-35mm TIR Lens Technology so the angle of your light is always pointed in the right direction Two LED lights produce 65 lumens of power and offer 270 degrees of visibility Meets ANSI FL-1 Standards IP-67 Submersible: This product is protected against dust, grit, and the effects of immersion for 30 minutes