The blinder v rear bike light is an innovative and powerful designed to grab the attention of other road users and be a pleasure to use. Available in two unique flash patterns. Blinder v is an impressive bike light that's simple to use while being stacked with innovative features that you'll love. Features bright and punchy 100 lumen output be seen from up to 900 metres away integrated usb connector no cables required. Blinder v has an integrated usb connector that plugs directly into usb a ports. A full charge is achieved in 4 hours easy on easy off mounting and removing your blinder v is simple with our handy clasp removal system. We also provide 3 silicone straps of various sizes to ensure you can get the most secure fit charge indicator light when blinder v is running low on battery a red ring will light up around the button. This ring will turn green and then turn off once fully charged packed with innovation efficient chip on board cob leds provide maximum brightness level for up to 90% of the battery burn time specification bulb type chip on board cob leds light output range max 100 eco flash 20 run time high 50 hrs low 4 hrs charge time 4 hours waterproof yes ip67 rating light modes 8 fits handle bars 22 32mm diameter rechargable yes integrated usb a connector dimensions h 51mm x w 44mm x l 77mm weight 40 grams low battery indicator yes strap material medical grade silicone operating temperature 20 to 50 degc 4 to 122 degf optimum charging temperature 20 to 22 degc 68 to 72 degf room temperature