Versatile Professional Flash Trigger - The QPRO-S wireless flash trigger offers functions like TTL, 1/8000s high-speed sync ( wireless flash mode is turned on your camera for the HSS function), multi-flash, manual flash, FEC, magnification, group modeling lamp control, group zooming, single-point triggering, and more. Additionally, it allows simultaneous adjustment of output values for all groups. Screen Magnifier Function - The LCD screen clearly displays flash settings and shows 5 groups at the same time. Double the group button quickly to switch the display from the settings for all groups (from A to E) to a magnified view of the settings for one group. This magnification function display the details relating to each group setting. Built In 2.4G Wireless Q System - Wirelessly trigger for Q3 Z1-S Z760-S NW420-S NW655-S S101-300W PRO/400W PRO thanks to the built in wireless Q system, or control other flashes without a Q system using a for QR receiver and a 2.5mm sync cord (all sold separately). Smart Connection with Wireless ID - The QPRO-S trigger features 5 groups and 32 channels for easy connection. Set the mitter and receiver flashes to the same channel and wireless ID for communication. This avoid any interference from other p ographers who are using the same flash and flash system. Wide Compatibility - The QPRO-S flash trigger can be quickly fixed on the camera with the metal shoe. Compatible with for A9 II A9 A7R V A7R IV A7 IV A7R III A7S III A7 III A7S II A7R II A7 II A7S A7 A7C A1 A6600 A6500 A6400 A6100 A6000 A99 A350. Note: Firmware upgrades are available to address compatibility issues. Supports TTL autoflash, multi flash, manual flash,1/8000s high speed sync,flash exposure compensation (FEC),single point triggering mode,and modeling lamp status control.In Manual mode, you can adjust the exposure values for multiple groups with ease. It's easy to use with 5 grou