Moon Arcturus Auto Rear Light. A user-friendly, super convenient rear light that is ideal for staying visible in built up urban areas Side Lighting. Moon’s Arcturus Auto comes with a specially adapted beam that spreads the light and provides excellent levels of side visibility. This helps you stay seen from various different angles which is important when cycling through built up urban areas where you’ll often be dealing with multiple lanes of motorists Mounting. The rear light comes with all the mounting parts you need to securely attach the light to pretty much anything and anywhere. The universal brackets can easily attach the light, without the need of tools or additional parts, to your seat post, backpack, helmet, etc USB Rechargeable. To save you the constant hassle of having to swap in and out batteries the light is USB rechargeable. Coming with a charging cable that allows you to recharge the light via any standard USB port which can easily be found universal. The light takes just two hours to fully recharge time and comes with up to 17 hours of battery life Light Modes. The light comes with seven different light modes which allows you to find the best possible mode for your current lighting environment and battery life. The light modes included are:Mode One: 10 lumens light output – 3.45 hours battery lifeMode Two: 15 lumens light output – 2.20 hours battery lifeMode Three: 35 lumens light output – 1.20 hours battery lifeMode Four (Flashing): 10 lumens light output – 17 hours battery lifeMode Five (Flashing): 35 lumens light output – 5 hours battery lifeMode Six (Flashing): 35 lumens light output – 8 hours battery lifeMode Seven (Flashing): 70 lumens light output – 16 30 hours battery lifeIn the Box. Arcturus Auto rear lightUniversal bracket2 x O-rings (20-35mm and 35-52mm)Belt clipUSB charging cableFeatures. 70 lumens maximum light outputSide visibility beamWater resistant to IPX4 certificationBattery life indicator7 different light modesUSB rechargeable2 hours full recharge timeComes with tool-free mounting optionsAutomatic, light-sensitive on/offCNC aluminium heat sinking casingWeighs 30gDimensions: 57.5 x 28.5 x 19mmBuy Moon Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.