YONGNUO YN685EX-RF On-camera Flash Light Master Slave Speedlite GN60 TTL 1/8000s HSS 2s Recycle Time with 2.4G Wireless Trigger System Replacement for Sony A7 Series A6600 A6500 A6400 A99 A77

Features:
【Built-in 2.4G Wireless Trigger System】Can work as a master or a slave unit, and fully compatible with RF radio triggering signals from other YONGNUO' speedlite. Supports 16 transmission channels and 10000 wireless radio ID, which makes it easy for multi-flash lighting.
【Supports Multi-group Flashes Independent Control】When as a master unit, the camera flash is able to control 5 independent groups to realize remote control of flash mode, flash output and focal length for YN650EX-RF/ YN685EX-RF/ YN320EX/ YN685(II)/ YN720/ YN560 IV/ YN660/ YN560 III.
【Supports Optical Transmission Wireless Slave Flash】In optical transmission wireless flashing mode, YN685EX-RF can be set as a slave unit to receive optical transmission wireless triggering signals from YN320EX or from S' flashes, such as HVL-F32M, HVL-F60RM, HVL-F60M, performing off-camera TTL mode flashing.
【Other Practical and Powerful Functions】GN60(ISO100,200mm); supports TTL/M/ Multi modes, up to 1/8000s High-Speed Sync, auto zoom and manual zoom, 2s recycle time; the flash coverage can be set in the range of 20 to 200m; with large LCD display screen, standard PC synchronous interface and USB firmware update port
【Compatible with Sony Camera】Compatible with Sony MI hot shoe cameras, such as A7RIV, A7RIII, A7RII, A7R, A7III, A7II, A7, A7SII, A7SIII, A7S, A6600, A6500, A6400 A6300, A6100, A6000, A58, A99, A99II, A77II, RX10, RX10II/III/IV Cameras.

Specifications:
Brand: YONGNUO
Model: YN685EX-RF
Circuit Design: lnsulated Gate Bipolar Translator
Guide Number: GN60 (ISO100, 200mm)
Flash Mode: TTL, M, Multi
Trigger Mode: set-top, radio master, radio slave, wireless optical slave (Ss, s1, S2)
Lamp Head Zoom Range: 20, 24, 28, 35, 50, 70, 105, 135, 200mm
Power Supply: 4 * AA  batteries (NOT included)
Light-emitting Times: 100~1500 times (using AA alkaline batteries)
Recycle Time: about 2s
Color Temperature: 5600K
Flash Time: 1/200 second ~ 1 /20000 second
Flash Control: 8 levels of brightness control (1/128~1 /1), a total of 22 levels of fine adjustment
External Interface: Hot shoe, PC interface, external charging interface, USB interface

Packing List:
1 * Flash
1 * Mini Stand
1 * Storage Bag
1 * Users Manual(English)