YONGNUO YN720 Universal Wireless Flash Master Slave Speedlite ( Item#: D5227US )

Features:
Adopts 2000mAh super-powerful li-ion battery with built-in protective circuit, ultra-fast charging recycle system and recycle time of full output is only 1.5s.
-- Equipped with 2000mAh big-capacity li-ion battery, number of flash firing is over 750. Battery built-in overcharge protection, short-circuit protection and thermal-shutdown circuit, with advantages of long service life, high safety.
Compatible with YONGNUO 602/603 wireless trigger system, and effective trigger distance is up to 100m.
-- Fully compatible with YONGNUO radio transmission trigger signal of YN720/ YN685/YN560 IV/YN660/YN560 III/YN560 TX/RF605/RF603/RF602, and there are 16 channels available for choice.
Supports radio transmission master control, can realizes 6-group flash control function easily.
-- As master control unit, YN720 is equipped with 6-group flash control function, which supports remote control of flash mode, flash output, focal length, stroboscopic times and stroboscopic frequency of YN720/YN685/YN560 III/YN560 IV/YN660.
Supports radio transmission slave function.
-- As slave unit, YN720 can receive the radio transmission trigger signal from YONGNUO YN720/YN560 IV/YN660/YN560 TX/RF605/RF603/RF602.
GN60@ISO100，supports manual zoom, you can set flash coverage in the range of 20~200MM
--High Guide number 2.4GHz radio transmission speedlite, supports M/Multi flash mode.
Supports USB Firmware Upgrade
--Equipped with USB port, please visit YONGNUO official website to download the latest firmware and update the flash to ensure the best compatibility and performance of the flash.
With large-size LCD display, supports real-time display of battery remaining capacity and power saving function.
-- Displays battery remaining capacity in real time, which helps user know the battery status easily; Power saving design, the product enters sleep mode or powers off automatically after being idle for a long time.

Specifications:
Circuit design: Insulated Gate Bipolar Transistor (IGBT)
Guide No.: 60 (ISO 100, 200mm)
Flash mode: M, Multi
Trigger mode: set-top mode, radio wireless master/slave modes, wireless optical slave modes
Zoom range: 20, 24, 28, 35, 50, 70, 80, 105, 135, 200mm
Vertical rotation angle: -7~90 degrees
Horizontal rotation angle: 180 degrees for each
Power supply: 1 * YN-B2000 11.1V 2000mAh Li-ion Battery
Charging Adapter: US Plug, input--100-240V 50/60hz 1.5A, output--19V 2A
Full Power Flashes: 750 times (YN-B2000 li-ion battery used)
Recycle time: Approx. 1.5s
Color temperature: 5600k
Flash time: 1/200s~1/20000s
Flash control: 8 levels of output control (1/128~1/1), 29 levels of fine tuning in total
External interface: hot shoe, USB port
Optical Transmission triggering distance: 20~25m indoors, 10~15m outdoors
Radio Transmission triggering distance: Up to 100m
Additional features: second curtain sync, sound prompt, automatically saving setting, power saving mode, overheat protection, custom functions
Item Size: 21 * 7.8 * 6.4cm /  (Extended state)
Item weight: 415g / (without battery and mini stand)
Package size: 23.5 * 17.5 * 10cm / 9.3 * 6.9 * 3.9in
Package weight: 1205g / 2.7lbs

Package list:
1 * Speedlite
1 * Li-ion Battery
1 * Battery Charger
1 * Power Adapter
1 * Mini Stand
1 * Protecting Bag
1 * User Manual(English & Chinese)