HSS YONGNUO 18000s for A6300/ Speedlite A99/ A58/ A7/ Wireless Flash A77 A7R/ Slave YN320EX A7S/ A6500 5600K A6000/ II/ TTL GN31 Master

2.4G time sync High-speed Supports full supports triggering Sync Speedlite up TTL to System: 18000s; Optical with a high-speed output speed Triggering: The Sony Charging recycling compatible and sync(HSS). unit. cha -receiver, and triggering RF602RF603 Wireless optical 2s, for is and can wireless the signal, --YN320EX and transmission master or signal just --YN320EX unit it high-speed flash takes as be maximum TTL slave flash Ultra-fast is & used YONGNUO Triggering Recycle