Yongnuo YN-560IV(560III upgrade version,a Combination of YN-560 III and YN560-TX all functions) 2.4G Wireless Flash Speedlite Trigger Controller for Canon Nikon Olympus Pentax+Free RockBirds 4.7 Inches HD Clear Ballistic Glass Screen Protector for iphone

Specification:
YN-560 IV Flash Speedlite is a combination of YN-560 III and YN560-TX, it has built-in wireless trigger system, so you can not only use it as flash speedlite, but also a flash controller Transmitter.
Functions:
*YN-560 IV can be used as master unit, provides 3 independent groups with controlling abiligy, realizing remote control the flas mode, flash output, and focal length of YN-560 IV and YN-560 III.
*One YN-560 IV can receive the wireless signal from YN560 IV, YN560-TX, RF-603 II and RF-602, with optical 16 channels. When YN-560 IV and YN560-TX used as transmitter, it can realize remote control and parameter settings.
*It can be triggered through the flash mounted on the camera, 2.4G wirless triggering system, S1 and S2 pre flash cancel mode.
Features:
a, TX Master Flash mode:
When you set up YN-560IV as TX mode, it can be used as a flash controller transmitter, it can trigger YN-560 IV ( RX mode )and YN-560 III ( RX mode ), and also can be used with RF-602, RF-603 II, RF-605 together.
b, RX Slave Mode:
When you set up YN-560IV as RX mode, you can use it with YN560-TX flash controller, and RF-602, RF-603 II, RF-605 single transceiver.
c, Manual mode
d, Multi mode
e, S1 / S2 mode --- You should use those two modes off camera
f, Power saving mode
g, Overheating Protection
h, Manually set and zooming position
g, PC Synchronous Port
Package Including:
1 x YN-560 IV Flash Speedlite
1 x Protecting bag
1 x Original box
1 x Manual in Chinese and English
1 x Flash Diffuser Cover ( for free )