Yongnuo YN600EXRT II TTL HSS Speedlite Flash for Canon with Optical Master

Yongnuo YN600EXRT II TTL HSS Speedlite Flash for Canon with Optical Master
Product Highlights: Canon-Compatible 2.4GHz 15-Channel RadioCompatible with Canon E-TTL / E-TTL IIGuide Number: 197' at ISO 100 and 200mmZoom Range: 20-200mm (14mm with Panel)Tilts from -7 to +90°Rotates Left & Right 180°Wireless Master/Slave TTL FunctionalityRecycle Time: Three Seconds (Alkaline)High-Speed,1st & 2nd Curtain SyncRuns on Four AA Batteries
Description:The upgraded version YN600EX-RT II, compared with the first version, the only difference is it supports Canon optical transmission wireless master flash function.
Features:The YN600EX-RT II equipped with USB interface, supports firmware upgrade, you can download the upgrade firmware through the Yongnuo official website to upgrade the flash.The YN600EX-RT II Supports auto and manual zooming, the flash coverage can be changed between AUTO, 20~200mm.The YN600EX-RT II can be triggered by the camera set-top, PC synchronous trigger, wireless optical/radio remote trigger.It just take 2 seconds at full output. Even if not use the brand new batteries, it just takes 3~4 seconds ultra-fast time to recycle; Besides, you can also use the external power supply to meet your higher requirement.
Compatible with : 1). Hot shoe TTL mode: Canon 1Dx, 1Ds series, 1D series, 5DIV 5DIII, 5DII, 5D, 7D, 7DII, 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 2). Wirelss TTL Slave mode: Canon 5DIII 7D 60D 700D 650D 600D, Yongnuo ST-E2, Canon 580EX II 3). Master Mode, It can trigger these flash:YONGNUO: YN600EX-RT YN685C YN568EX II, YN568EX, YN565EX, YN500EX, YN560EX, YN510EX Canon: 600EX-RT, 580EX II, 580EX, 430EX II 
Specification:Brand: YongnuoModel: YN600EX-RT IIGuide No.: 196.85'; (60 m) ISO100 at 200 mm PositionExposure Control:  E-TTL / E-TTL II, ManualVari-Power: 1/1 - 1/128Bounce Head: -7 to +90°Swivel Head: 360°Coverage: 14 - 200 mm (Full Frame)Zoom Head: Full Frame: 20 - 200 mmOff-Camera Terminal: PCRecycle Time: Approximately 3 SecondsFlash Duration: 1/200 - 1/20000 secFlash-Ready Indicator: YesWireless Operation: Method: Optical pulseDistance: Up to 82.02' / 25 mMethod: RFDistance: Up to 328.08' / 100 m
Wireless Communication Channels: 15 ChannelsWireless Groups: 5 GroupsPower Source: 4x AA Alkaline, Rechargeable NiMH Battery (Not included)Dimensions (W x H x D): 2.4 x 3.1 x 8.1" / 62.0 x 78.0 x 205.0 mmWeight: 15.168 oz / 430 g
Contains: 1x Yongnuo YN600EX-RT II Flash Speedlite 1x Protector bag 1x Mini stand 1x Manual in English & Chinese