The Knog Big Cobber Front is a tail light that offers an incredible 330° of brightness, allowing you to see clearly from all angles. In increasingly heavy traffic, this bike light is great for daytime use and increases your safety on the road. With a light output of 270 lumens, the Big Cobber flasher is very powerful indeed. With a light weight of 59 g and integrated USB charging, it becomes a handy helper that can also be programmed with the Modemaker app (including eye protection mode). Weight: 59 g 100% waterproof Dimensions: 92 x 33 mm BACK 270 LUMENS (TBC) 2 hrs. 130 LUMEN (130 LUMEN - STEADY) 15 - 40 hrs (270 LUMEN - FLASH) LIGHTING MODES: Max, Mid, Steady Pulse, Flash, Rolling Flash, Side Flash, Disco Flash, Eco Flash are pre-programmed. LEDS: Efficient on-board LEDs (COB) designed to provide maximum brightness level. CHARGE TIME: 5.5 hours (LED indicator light goes off when fully charged) BATTERY: USB rechargeable lithium polymer CHARGE SYSTEM: Tool-less removable silicone strips, for saddlebags and handlebars with 22-32mm diameter + magnetic mount. Including Aero shape. Accessories. Runtime Rear Modes Lumens Runtime (hrs) Max 160 2.0 Mid 60 3.5 Steady Pulse 270 2.59 Flash 270 6.5 Rolling Flash 110 5.5 Side Flash 170 2 Disco Flash 140 5 Eco Flash 15 100