Specifications:Brand: YONGNUOModel: YN560-TX PROColor: BlackType: 2.4G On-camera Speedlite TransmitterExposure Control System: E-TTL II/E-TTL Autoflash, Manual flash, Multi flash, Gr flashWireless Channel: Ch1-16Slave Unit Control: Up to 5 Groups(A/B/C/D/E)Distance: Approx. 100 metersFlash Ratio Control: 1:8-1:1-8:1, 1/2-stop IncrementsFEC: 1/3-stop increments 3 StopsHigh-speed Sync: SupportManual Flash: 1/1-1/128 Power(1/3-stop increments)Stroboscopic Flash: Support(1-500Hz)Assist Beam Emitter: SupportFirmware Update: SupportPower Supply: 2 * AA Batteries(Not included)Package Size: 11.2 * 9.1 * 4.5cm / 4.4 * 3.6 * 1.8inPackage Weight: 200g / 7.1oz Features:Specially designed for various Nikon DSLR cameras.Adopt 2.4G wireless technology, support wireless trigger to YONGNUO YN862N/YN968N/YN200/YN560III/YN560IV/YN860Li/YN720/YN660/YN685 speedlite; Support wireless shutter receiver of YN622NII/RF605 Series/RF603II Series/RF602-RX.With 16 wireless channels, up to 5 groups(A/B/C/D/E) of slave unit control, transmission range within approx. 100 meters.Support multiple exposure control systems, including E-TTL II/E-TTL Autoflash, Manual flash, Multi flash and Gr flash; Powered by 2pcs AA batteries(not included).Large and clear screen, user friendly keys, easy to operate; Exquisite fuselage design, with quick lock.