Godox Thinklite TTL HSS TT685S Camera Flash High Speed 1/8000s GN60 for Sony DSLR Cameras a77II a7RII a7R a58 a99 ILCE6000L It supports Multi/Stroboscopic flash function, as well as auto and manual zoom function with a flash coverage of 20 to 200 mm. With built-in 2.4G wireless flash transmission and TTL compatible flash, your shooting will become simpler. Flash duration: 1/300 to 1/20000 seconds. Exposure control system: TTL auto flash and manual flash. Sync Mode: High-Speed Sync(up to 1/8000 seconds), First-curtain sync and second-curtain sync Suitable for Sony DSLR Camera a77II, a7RII, a7R, a58, a99, ILCE6000L, etc. Guide No. 60(m ISO 100) /190(feet ISO100) 
 Flash coverage: 20-200mm Swinging/titling flash head, 0-360 horizontally and -7-90 vertically(Bounce Flash) Flash duration:1/300 to 1/20000 seconds Exposure control system: i-TTL II auto flash and manual flash Flash Expose Compensation(FEC): Manual, 3 stops in 1/3 stop increment. Sync Mode: High-Speed Sync(up to 1/8000 seconds), First-curtain sync and second-curtain sync. Recycling time: approx. 0.1-2.6 seconds Sync Triggering Mode: Hotshoe, 3.5mm sync line, Wireless control port Power Supply: Ni-MH batteries (recommended) or 4xLR6 alkaline Approx 230 full power pops (2500mAh Ni-MH batteries Large LCD screen shows operations precisely and clearly. Multifunctional buttons offers various and easy operation.