SN910EX-RF is the First Wireless Radio Transmission RT System Speedlight for Nikon cameras in the world.

Features:
The First Wireless Radio Transmission RT System speedlight for Nikon cameras in the world.
Wireless radio master function and slave function， can be used as on-camera master unit and remote slave unit of RT system.
Supports high-speed sync， the maximum shutter sync is up to 1/8000s.
Supports multiple trigger modes， and it can be triggered through the set-top of camera， 2.4G wireless triggering， S1 and S2 basic optic slave modes.
The wireless triggering distance can reach up to 100m， better to meet your needs.
The speedlite with high index supports TTL/ M/ Multi flashing modes.
Multiple flash groups， it supports A/B/C groups.
Add standard PC port， you can make the flash synchronously by connecting to the PC port.
Auto and manual zoom， the flash coverage can be changed between 20-200mm.

Specifications:

Guide Number	GN 60m(ISO 100/200mm)
HSS	to 1/8000s
Flash Mode	i-TTL /M /Multi
Trigger Mode	On-camera flash/ 2.4G Shanny RF wireless system/ S1!#!amp!*!S2 basic optic slave modes
Zoom Range	20-200mm auto and manual zoom(14mm with wide-angle diffuser)
Master Flash	Master wireless radio signal transmission
Slave Flash	Wireless slave 2.4G RF for Nikon/ S1 !#!amp!*! S2 basic optic slave modes
Sync Mode	HSS / 1st curtain sync / 2nd curtain sync
FEC(Flash Exposure Compensation)	Support(1/3rd increments±3 stops)
FEB/FEL	Support
AF Assist Light	Support(LED AF Lamp)
Modeling Flash	Support
Manual Flash	1/128-1/1 output control(1/3rd increments)
Stroboscopic Flash	1-100Hz
Full Power Recycle	≤3s
Wireless Radio Transmission Distance	≤100m
Multiple Flash Groups	Support A/B/C Flash Groups
GLS Mode	Support to set the independence group mode
Wireless Radio Transmission Optical Channels	CH1-CH15
Sync Port	External battery port / PC sync port/ Standard hot shoe
Battery	4 * AA Alkaline or NIMH battery(Not included)
Other Features	Sound prompt/ heat protection/ custom function/ large clear LCD screen ect.
Item Weight	420g / 14.8oz
Item Size	20.5 * 7.8 * 4.9cm / 8.1 * 3.1 * 1.9in
Package Weight	699g / 24.7oz
Package Size	21 * 11 * 9cm / 8.3 * 4.3 * 3.5in

Package List:
1 * Speedlight
1 * Bag
1 * Micro Plate
1 * User Manual(English / Chinese)