The Garmin Varia RTL515 Cycling Rearview Radar with Tail Light is a rear light designed for cycling. It has four modes: solid, peloton, night flash, and day flash. The light has a 220° viewing angle and is made of plastic. It weighs 2.5 oz (71.0 g) and has a water rating of IPX7. The light has a rechargeable battery and features flashing and water-resistant capabilities. The light has a maximum of 65 lumens in day flash mode. Fast shipping.