YONGNUO YN968EX-RT III LED Wireless Flash Speedlite Master TTL HSS for Canon Digital Cameras
Equipped with LED Light
Fully Compatible with YONGNUO YNE3RT (II), YN600EX-RT II, YN968EX RT, Canon's 600EX-RT, ST-E3-RT Wireless Signal
One YN968EXRT III can be used as master unit to trigger YONGNUO YN600EX-RT (II), Canon 600EX-RT, and live display the flash groupings of slave unit and recycling information, one YN 968EX-RT III can respectively receive the wireless signal of master unit YN968EX-RT, YN600EX-RT (II), YN-E3-RT (II), Canon 600EX RT, ST E3 RT, realizing remote TTL, M, Multi, Gr flash, supports linked shooting with radio transmission.
GN60@ISO100,105mm, TTL, Manual, Multi, Gr, high-speed sync 1/8000S
Support Auto/Manual Zooming
Supports USB Firmware Upgrade
Supports Wireless Optical Slave function
Settings Save Automatically, Supports Custom Functions (C.Fn), Personal Functions(P.Fn).
Ultrafast Charging Recycle System, Supports External Power Supply
Equipped with Big Size LCD Display Screen, Standard PC Synchronous Interface

Yongnuo YN-E3-RT II Speedlight Transmitter is compatible with the Canon 600EX-RT flash unit and ST-E3-RT transmitter, it provides practically all the features of the original Canon ST E3-RT.
Features:
Two-way 2.4G radio communication, fully compatible with ST-E3 RT and 600EX-RT
15 Physical Channels, 1 Auto Channel, Up to 10,000 customizable photographer ID
Transmission Range: 100M
Multi YN E3-RT II can share slave flashes
Firmware can be upgraded via USB
Built-in AF Lamp, buzzer
Flash Mode: ETTL, M, Multi, GR (GR Mode only works with cameras released since 2012)
A/B/C/D/E Five groups
Supports 1st Curtain, 2nd Curtain (Only in M mode), High speed Sync

Package Included:
1 * YN968EX-RT III Flash
1 * YN-E3-RT II Speedlight Transmitter
1 * LED CT converter
1 * Mini Stand
2 x Shutter release cable