Knog Blinder Road 70 Lumens Rear Light

LIGHT OUTPUT : 70 lumensDIMENSIONS : 27 x 76 x 52mm.WEIGHT : 52g FEATURES LENS : Collimated optics. CONSTANT BRIGHT TECH : Maintains consistent brightness throughout specified run-time. INTEGRATED USB PLUG : Designed to be exposed to the elements, 100% waterproof.  THERMAL MANAGEMENT : Automatically regulates the light output for optimum performance. BIKE ATTACHMENT : 3x interchangeable straps for post diameters measuring 22-32mm+ & AERO POST COMPATIBLE     MATERIALS : Polycarbonate housing and PMMA Lens. Hard-anodised aluminium fascia. UV-Resistant silicone.  BATTERY : USB Rechargeable Lithium Polymer ACCESSORIES INCLUDED: Interchangeable straps for rear light, USB charge cable.