Godox TT520II 433MHZ Wireless 1300s-12000s HSS Flash Speedlite Camera Top Fill Light for Canon Nikon DSLR Cameras 1. It has 433MHz wireless transmission, RT transmitter and 16 trigger channels 2. 1 300s-1 2000s flash duration, clear and realistic image 3. Flash mode: m, S1 and S2 to improve versatility and availability. 4. 8 variable flash outputs from 1 128 to the maximum, meeting your flashlight needs. 5. Various automatic protection functions can save power and prevent overheating. 6. Synchronous socket and fast charging port for external power supply are added. 7. Integrated reflector to highlight points on eyes 8. Built in wide screen diffuser to create soft and natural lighting 9. Guidance No.: 33 (M ISO 100) 10. Flash mode: m, S1, S2 11. Vertical rotation angle: 0-90 degrees 12. Horizontal rotation angle: 0-270 degrees 13. Power supply: 4xAA battery (alkaline or Ni MH battery can be used) 14. Lighting time: 100-150 times (using AA alkaline battery) 15. Recovery time: about 0.1-5s (using No.5 alkaline battery) 16. Color temperature: 5600 + - 200K 17. Working distance: 15m 18. Three flash modes: m, S1 and S2 to improve versatility and availability. M means manual mode, S1 means normal optical slave, S2 means pre flash cancel slave. 19. 1 300-1 20000 s flash speed, providing clear and vivid images. 8 variable flash output, from 1 128 to full, to meet your flashlight needs. 20. Synchronous socket and external power supply terminal are added. PC synchronous socket charging socket. Multiple automatic self-protection, power saving, prevent overheating. 21. Bounce the flash behind the soft shadow of a natural looking subject. Built in receiver and RT transmitter, wireless transmission and 16 channel trigger. 22. The wide panel creates soft and natural lighting and reflection cards to give the eye a prominent point. Compatible with Canon Nikon Olympus Pentax Fuji SLR camera and standard hot boots.