Andoer Travor SL-282S MINI TTL Flash Speedlite for Sony Alpha a7 a6000 and a77 DSLR Cameras Compatible for Sony a77 DSLR cameras and for Sony Alpha a7 a6000. A simple and exquisite external speedlite, which has a slim design with 24mm thickness body. It has the function of automatic white balance and red-eye removal. GN: 20 Have TTL mode, master function. Zoom: 18-50mm. Have auto-sleep function and overheat protection function. Power saving mode and low power indicator.