Features:
--Supports ETTL Flash
Supports FEC, FEB, Front and Rear-curtain sync, FE lock, Modeling , support for Canon menu accessible.
--Double-Tube Macro Flash
Supports flash ratio adjustment, there are 8 levels (1/128-1/1) for the intensity adjustment for the flash control, total 22 levels fine tuning; the tube A and tube B can flash individually, index is wider and more practical.
 -- Tube Installation
Install the tube on the of ;
Install the on the front of the lens,then install tube on the .
 -- Coverage
Vertical angle: Upwards,downwards 90 degrees;
Horizontal angle: inwards 60 degrees,outwards 30 degrees;
The rotate degree of the : upwards 50 degrees, downwards 30 degrees;
tube can be installed on the tripod for use.
--Ultra- Recycle System
It just take 3 seconds at full output. Even if not using the , it just takes 4~5 seconds to recycle.
--C.Fn Setting Custom Function
You can customize the function as needed through the custom function.
-- Assist
The assist is divided into low and highlight mode,achieve precise .
--Equipped with PC Sync Interface
The YN24EX is equipped with standard PC synchronous interface which allows you convenient to use synchronous flash by using PC synchronous line.
--Supports the Lens of Multiple Filter Size
Supports the lens of the following filter size: 52mm, 58mm, 67mm, 72mm.
--Low Remind Function
When the is insufficient,the red will which remind you to replace the timely.
--Sound prompt system
When the sound prompt system is enabled, different sound modes will prompt different working conditions of the speedlite so as to allow you to on process (Note: the sound can be turned off).
--Equipped with the External Socket
YN-24EX is provided with external socket to meet your higher demand of recycling and no longer missing the moments.
--Automatic Settings Saving
YN-24EX can automatically save your current operating settings to convenient your use.

Compaible Cameras:
For Canon 1Dx, 1Ds series, 1D series, 5DIII, 5DII, 7DII 5D, 6D, 7D, 80D, 70D, 60D, 50D, 40D, 30D, 20D, 750D 700D, 650D/T4i, 600D/T3i, 550D/T2i, 500D/T1i, 450D/Xsi, 400D/Xti, 350D, 100D, 1100D, 1000D, 1200D.


Specifications:
Model: YN24EX
Circuit Design: Insulated Gate Bipolar Transistor (IGBT)
Type: Automatic macro flash for close- photography
Flash Ratio Control: Two flash heads: 24/79, flash head: 26/85 (ISO 100 105mm )
Flash Coverage: Vertical Angle: Upwards, downwards 90 degrees
               Horizontal Angle: Inwards 60 degrees, outwards 30 degrees
               The rotate degree of the : Upwards 50 degrees, downwards 30 degrees
Guide No.: With the of 1/2 EV within the of 8:1 - 1:1 - 1:8
Flash Mode: TTL, M
Times: 200~2500 times
Recycle : Approx 3s
: 4pcs AA alkaline or AA Ni-MH
Color : 5600k
Flash : 1/200s~1/20000s
Flash Control: 8 levels of output control (1/128~1/1), 22 levels of fine tuning
External Interface: Hot shoe, PC port and external port
Control Unit Dimension: 175 * 105 * 160mm
Flash Unit Dimension: * 49 * 107mm
Item Weight: 870g / 30.7oz
Package Size: 22.5 * 14.5 * 11.3cm / 8.9 * 5.7 * 4.5in
Package Weight: 1008g / 35.6oz

Package List: D4620
1 * YONGNUO YN24EX Macro Flash
4 * ( 52mm, 58mm, 67mm, 72mm )
1 * Mount
1 * Protecting Nylon Bag
1 * User Manual (English & Chinese)

Note:
are not included.