The lightweight, waterproof Airstream rear light, weighing only 36 g, features Twin Beam technology and draws its power from the large main battery of the Airstream, eliminating the need for its own power source. This makes it the smallest rechargeable rear light in the world. Additionally, it is the brightest approved rear light on the market. The rear light is easily connected to the charging port of the Airstream, and the intelligent electronics of all Airstreams automatically recognize it. The operation of the three highly visible LEDs only slightly reduces the battery life of the Airstream by a few minutes. The universal seat post mount fits all diameters and is easy to install, securely holding the compact rear light in place even during strong vibrations. With the reliable Airstream rear light, you can confidently forget about failing plastic rear lights.