Tate Labs Bar Fly 4 SLi Light Bundle

Designed to accommodate a wide range of computers, including the new Garmin Edge 1000 and a light. The light bundle is compatible with Garmin Edge 200-1000 computers and Forerunner 310/910/920XT watches with QR mount. Light mount accommodates cylindrical lights weighing less than 170 grams*.

Comes with Light mount (lights weighing less than 150 grams)
Compatible with 31.8 and 35.0 bars
Mount up to 3 accessories simultaneously (computer, camera or light, Di2/EPS junction box). Light and Di2 mounts available separately.
Wind Tunnel tested to be the fastest mount in the world, save over 8 seconds per 40 KM.
20 Times stronger than competing products
Lifetime warranty