Features:
Compatible with C and N’s Optical Transportation Slave Flash: YN565EX III can respectively accept the master unit of YN600EX-RT II、YN568EX II、YN568EX III、600EX(II)-RT、580EX II、SB910/900/800/700, internal flash and commander and  signal of 7D/60D/600D, realizes external TTL and manual flash and stroboscopic flash.
High Recycling System:the recycling for full output just takes 2 seconds; you can get high current-return experience even without using , which will only takes 3-4 seconds.
Multiple Trigger Mode Supported:YN565EX III can be triggered by the set-, PC synchronization trigger and optical trigger off the ; GN58@ISO100,105mm, support TTL, M, Multi flash.
Supports Electric Zooming(24~105mm):Supports automatic and manual zooming, the focal length can be varied between 24~105mm.
Supports Firmware Upgrade:equipped with the USB interface, you can download the latest firmware from  official website to upgrade the speedlite.
Other users-friendly functions & features:Sound Prompt System;  -assist beam emitter; automatic settings saving; Large-size LCD display and standard 2.5mm PC interface.

Specifications:
Circuit design: Insulated Gate Bipolar Transistor (IGBT)
Guide No.: 58 (ISO 100, 105mm)
Flash mode: TTL, M, Multi
Trigger mode: Set-, Sc, Sn, ,
Flash Coverage: aoto, 24, 28, 35, 50, 70, 80, 105mm
Vertical rotation angle: -7~90 degrees
Horizontal rotation angle: 0~270 degrees
: 4 * AA (not included; Alkaline or NI-MH are usable)
times: 100~1500 times (with AA alkaline )
Recycle : Approx. 2s (with new AA alkaline )
Color : 5600k
Flash : 1/200s~1/20000s
Flash control: 8 levels of output control (1/128~1/1), 22 levels of fine tuning in total
External interface: hot shoe, PC port, USB port, external port
External : can be connected to SF-18C or SF-17C
triggering distance: 20~25m indoors, 10~15m outdoors
Additional features: Rear-curtain sync, FEC, FEB, exposure lock, modeling , saving mode, over heat conservation.
Item Size: 6 * 7.8 * 19cm/ 2.4 * 3.1 * 7.5in(Extended state)
Item weight: 370g / 13.1oz
Package size: 21.5 * 9.5 * 8cm / 8.5 * 3.7 * 3.1in
Package weight: 550g / 19.4oz

Package list:
1 * Speedlite
1 * Stand
1 * Protecting Bag
1 * User Manual(English & Chinese)