Garmin Varia UT800 Smart Headlight Trail. A super powerful 800 lumen smart headlight that is compatible with your edge computer for automatic lighting that adjusts to your surroundings Smart Compatibility. You can pair the Varia Smart Headlight to your Edge cycling computer to gain the best in automatic lighting technology. Once paired your Varia light will automatically adjust its beam dependent on your speed and ride profile. For example when you are travelling at high speeds the Vario will provide more light than when you are travelling at slower speeds. The light also instinctively adjusts to ambient light conditions Side Visibility. When cycling in built up urban areas or using busier, multi-laned roads it’s often important not just to stay visible from the front and back but also to stay seen from multiple different angles. The Vario therefore has a specially designed beam that produces up to 270-degrees of visibility ensuring that you stay seen Light Modes. The Vario comes with five different light modes which you can easily toggle between and choose between dependent on your current lighting environment and your battery life. The modes include:Mode One (High) – 800 lumen output and 1.5 hour battery lifeMode Two (Medium) – 400 lumen output and 3 hours battery lifeMode Three (Low) – 200 lumen output and 6 hours battery lifeMode Four (Night Flash) – 100 to 300 lumen output and 6 hours battery lifeMode Five (Day Flash) – More than 700 lumen output and 25 hours battery lifeIn the Box. Varia UT800 Smart HeadlightCharging cableHelmetManualFeatures. Up to 800 lumen light outputAutomatically adjusts to ambient light conditionsCompatible with Edge cycling computers5 different light modesWeighs 130gDimensions: 96.6 x 33.5 x 29 7mmUp to 8 hours of battery lifeCREE LED270-degrees of side visibilityWaterproofBuy Garmin Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.