Godox X1T-S 2.4G TTL Wireless LCD Flash Transmitter for Sony Camera (X1T-S) Support GR group flash, max.5 groups & 32 channels Fully support TTL autoflash, 1/8000s HSS, FEC, FEL and modeling flash 2.4G wireless transmission, operating distance can reach up to 100 meters Also support sync delay setting, wireless shutter release, zoom setting and memory function Compatible with Godox TT685 Speedlite, Godox X1R Receiver In TTL Mode, Ratio Off In M mode, flash ratio(A:B:C) Support for GR group flash, A-E group can set their flash mode separately Controllable Slave Group In the GR grouping mode, 5(A/B/C/D/E) In the Ratio Grouping Mode, 3(A/B/C) Transmission Distance(Max.) About 100m Sync Delay Set: Yes(0-10ms, use 100 as the unit) Zoom Setting: Adjust the flash&#039;s focal length through the transmitter Output Interface: Use a PC cord to input and output AF light: ON/OFF Sync Mode: HSS Radio Channels: 32 Flash Mode: TTL Input/Output: PC in put Flash Zoom Control: YES USB fireware upgrade: YES Wireless Shutter Function: YES(2.5MM Sync port) Transmitter Group Modes: Gr mode (A/B/C/D/E), Ratio mode (A/B/C) Weight: 98g Color: Black Battery: AA Alkaline or NiMH batteries(Not Include) Compatible Cameras: Sony TTL Camera