Garmin Varia 2 Radar Tail Light & Head Unit. The Varia 2 is the ultimate rear light that not only provides you up to 220-degress of visibility and can help you stay seen from up to 140 metres away Visibility and Sensor. The Varia 2 is both a rear bike light and also a sensor yet that will let you know when over road users are heading towards you. The light provides super bright visibility with a special beam that has a wide beam that projects 220-degrees of visibility and can be seen from up to 140 metres away Tail Light and Head Unit. To control the Varia 2 you will need a dedicated display or a compatible Garmin computer. The Varia 2 Radar Tail Light and Head Unit comes with the Varia 2 display included. The display allows you to control the light from your handlebars – turning the light on and off, and also changing between modes. The display unit will also illuminate and let you know when oncoming vehicles are approaching Features. Controlled by radar display or compatible Garmin computerIntegrated mounting systemRear lightUp to 15 hours of battery life220-degrees of visibilityCan be seen up to 140 metres awayDaylight visibilityCompatible with a majority of road bikesBuy Garmin Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.