1. In optical transmission and radio transmission flash photography, YN600EX-RT II can be used as the master unit to control flash mode, exposure compensation, flash ratio, strobe times and strobe frequency.
2. Wireless transmission flash shooting, with YN600EX-RT (II), for Canon 600EX (II-RT/430EXIII), a YN600EX-RT II can be used as a set-top box master or remote control slave, a total of 15 channels to choose from, to achieve TTL , manual flash and strobe.
3. In optical transmission flash shooting, YN600EX-RT II can be used as the master to trigger Yongnuo and for Canon EX series flashes (except YN585EX), support 4 channels, realize wireless TTL, manual flash and strobe.
4. One YN600EX-RT II can receive wireless signals from the host YN600EX-RT II, ??YN568EX II, 600EX(II)-RT, 580EX II, SB-910/900/800/700, for Nikon built-in flash C command and Canon 7D/60D/600D camera has built-in flash wireless signal to realize wireless TTL, manual flash and strobe.
5. YN600EX-RT II, ??as a professional creative high derivative flash, supports TTL, M, Multi flash.
6. YN600EX-RT II can realize TTL, manual flash, and the maximum shutter synchronization speed can reach 1/8000.
7. Ultra-fast charging and recycling system, support external power supply
8. YN600EX-RT II is equipped with USB interface, supports firmware upgrade
9. Support auto/manual zoom: support auto and manual zoom, flash coverage can be switched between AUTO, 20~200mm.
10. Supports multiple trigger modes: YN600EX-RT II can be triggered by camera top trigger, PC synchronous trigger, wireless optical/radio remote trigger.
11. Auto save settings, support custom settings (Fn)
12. Equipped with large-size LCD screen, standard PC synchronization interface

Specification:
1. Circuit Design: Insulated Gate Bipolar Transistor (IGBT)
2. Guide number: 60 (ISO 100, 105mm)
3. Flash mode: TTL, M, Multi, GR
4. Trigger mode: camera setting, wireless master mode, wireless slave mode, Sc, Sn, S1, S2
5. Zoom range: 20, 24, 28, 35, 50, 70, 80, 105, 135, 200mm
6. Vertical rotation angle: -7~90 degrees
7. Horizontal rotation angle: 0~360 degrees
8. Power: 4 x AA size batteries (not included)
9. Lighting times: 100~1500 times
10. Recovery time: about 3s
11. Color temperature: 5600k
12. Flash time: 1/200s~1/20000s
13. Flash control: 8-level output control (1/128~1/1), 29-level fine-tuning
14. External interface: hot shoe, PC port
15. Wireless trigger distance: indoor 20~25m, outdoor 10~15m
16. Optical transmission trigger distance: 100m(max)
17. Additional functions: master flash, high-speed sync, rear-curtain sync, FEC, FEB, FEV, electronic flash head zoom, voice prompt, auto save settings, PC port, power saving mode, overheat protection and advanced option settings
18. Dimensions: 20 x 7.5 x 6.5cm
19. Weight: 430g

packing list:
1 X Flash YN600EX-RT II
1 protective bag
1 mini stand
1 X Chinese and English manuals