NiteRider Omega 300 Rear Light. Super-bright 300 lumens light output with five different light modes, a USB rechargeable battery, and a universal, quick-release mounting system Light Modes. NiteRider’s Omega 300 Rear Light comes with five different light modes with a range of flashing and constant mode. Included in the modes are the Daylight Flash mode which can keep you seen even in direct sunlight plus a Group Ride mode that keeps you visible while minimising distractions for other riders Mode One (Flashing): 6 hoursMode Two (Daylight Flash): 8 hoursMode Three (Group Ride): 6 hoursMode Four: 5.30 hoursMode Five: 30 hoursUSB Rechargeable. The light comes with an internal lithium-polymer battery which is easily rechargeable via any standard USB port. Completely rechargeable in just 2.15 hours the light comes with a battery life for up to 30 hours Mounting Strap. An integrated mounting strap comes with a completely adjustable design that provides an easy on and off seat post strap mount with a quick release tab. This is ideal for commuters In the Box. LED tail lightSeat post mountUSB charging cableFeatures. 300 lumens maximum outputInternal lithium-polymer battery2 15 hours full recharge timeUp to 30 hours of battery lifeLow battery indicator5 light modesGroup Ride and Daylight Visible Flash modeFL1 standard IP64 dust and water resistanceQuick release seat post mounting strapWeighs 79gBuy NiteRider Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.