A compact, aero-post compatible taillight, the KTV Drive Rear's lightweight, waterproof (IPX7-rated), co-molded construction offers up to 10 lumens of output as well as up to 270-degrees of visibility via the Wide Angle Optics lens. Choose from 5 different output modes and take advantage of the KTV's 20-hour maximum runtime. You also never have to worry about forgetting your charging cable—the KTV features a built-in USB stick for convenient, cable-free charging.SPECS:Max Lumens:10Max Runtime:20 hoursRecharge Type:USB StickWeight:45.3gDimensions:64.7mm, 45mm, 38.9mmFeatures:IPX7