This is one impressive light set and perfectly suited to riding in urban environments. It's powerful durable and with long runtimes will ensure you're seen all day and night. A step up in rear lumens from the blinder 600 and plus rear light set you'll be even more visible from behind with blinder square's punchy 100 lumens. Blinder 600 front combining robust cnc construction compact design perfect beam angles and powerful light output blinder 600 is a top shelf front bike light. Produces a powerful 600 lumen road focused beam provides quality illumination up to 80m industry leading battery tech provides 2 hrs runtime on full brightness up to 120 hours runtime on eco flash mode includes a tough and durable mount for over or under bar mounting pre programmed with 6 light modes to suit all conditions usb c rechargeable cable not supplied 100% waterproof with an ip67 rating intelligent button leds show battery level and charge status side illumination windows for improved visibility blinder square rear blinder rear is one of knog's most individual rear bike lights ever adding serious personality to you ride. Be seen from up to 450 metres away usb rechargeable integrated usb a connector for cable free charging waterproof with ip67 rating up to 60 hr runtime 8 light mode settings blinder 600 front bike light mode lumens runtime high steady 600 2 hrs medium steady 300 4 hrs low steady 150 8 hrs pulse 300 8 hrs strobe 150 16 hrs eco 90 120 hrs blinder square rear bike light mode runtime high steady 2.5 hrs low steady 6 hrs flash 4 hrs boring flash 5.5 hrs spinning flash 2 hrs speed up flash 13 hrs inside out 3 hrs eco 65 hrs blinder 600 front bike light bulb type 4 x leds battery 3350 mah 18650 3.7v lithium ion rechargeable battery lens optics polycarbonate 2 x spot optics and 2 x wide angle optics beam angle 22deg max lumen output 600 lumens light modes 6 aero bar compatible yes low battery indicator yes battery charge indication yes yellow flash charging green short flash charge complete battery status indication green 100 50% yellow 50 25% red 25 10% red flash 10% fits bars 22 ndash 28 mm and 29 35 mm run time eco flash 120 hrs high steady 2 hrs charge time 4 hrs rechargeable yes via usb c connector weight 155 g 5.5 oz dimensions h 110 mm x w 27 mm x l 27 mm waterproof yes ip67 rating chassis cnc 6061 aluminium operating temp 20 to 50 degc 4 to 122 degf strap mount material medical grade silicone glass reinforced plastic optimum charging temp 20 to 22degc 68 to 72 degf room temperature blinder square rear bike light bulb type chip on board cob leds light output max 100 lm run time max steady 2.5 hrs eco flash 55 hrs charge time 4 hrs waterproof yes ip67 rating light modes 8 fits seat posts 22 ndash 32mm diameter rechargeable yes integrated usb a connector dimensions h 43 mm x w 43 mm x l 46 mm weight 34 gm 1.2 oz low battery indicator yes strap material medical grade silicone operating temp 4 to 122 degf optimum charging temp 68 to 72 degf room temperature