i-TTL High Speed Flash Speedlight for Nikon

It is a professional speedlite which is specially design for Nikon Camera. Everything can be set to automatic-it saves you a lot of work and time, so you can focus on your photography!
Features
High-performance TTL electronic flash unit, perfectly compatible with Nikon i-TTL.
High speed continuous shooting-each second for 8pcs photos.
Sharp and clear LCD backlight screen.
Support Nikon wireless flash system (master/slave).
Support wireless output setting for different groups in M mode.
Support on-camera/wireless TTL exposure lock.
Front/rear curtain sync. PC sync socket.
TTL Auto exposure with Exposure Compensation: -3.0EV to +3.0EV.
Temperature test(high-temperature alarm).
Specifications
Type on camera
Compatible cameras Nikon i-TTL DSLR
Guide No. 50(ISO100 in meters)
Flash coverage 18-135mm(14mm with wide panel)
Zoom coverage automatic
Flash duration 1/1050s-1/20000s
Recycle time 0.5-5s
Wireless transmission range 12-15m/39.4-49.2ft(indoors), 8-10m/26.2-32.8ft(outdoors)
Working mode i-TTL, M, MULTI
Wireless slave mode S1, S2, REMOTE
Focus Auxiliary Light automatic
Color temperature 5500K
Reception angle 40°horizontal, 30°vertical
Assist light effective range 0.6-5m/2.0-16.4ft
Battery spec 4 x AA alkaline battery(not included)
Battery life100-700flashes
External power supply compact battery pack CP-E4
Size 19L x 6.5W x 5Hcm
Weight 580g
Package content 1 x Macro Ring Flash Light, 1 x flash stand, 1 x flash diffuser, 1 x leather carrying bag, 1 x user manual, 1 x warranty card
Certification CE, RoHS