The flash unit has 8 steps of power output control and three modes, meeting different photographic environments.
Has a fast recycle time of about 0.1-5 seconds; 1/300s~1/20000s flash duration, giving you great exposure.
With a pull-out reflector/diffuser, a soft box and a mini stand, convenient for your use; low power consumption and overheat protection.
Suitable for DSLR camera with standard hot shoe, nice replacement for Nikon, Canon, Pentax, Olympus, etc.
Comes with shutter release, no need to fix the flash on the top of the camera, more flexible to use, shooting wonderful photos with stereo feeling.
With PC Sync jack, the speedlite and camera can trigger synchronously; and the AT-16 trigger transmitter has 16 channels and good anti-interference performance.

Specifications:

Color: black
Material: Plastic

--- Flash
Guide Number: 33 (ISO @ 100)
Flash mode: M, S1, S2
Vertical rotation angle: 0~90 degrees
Horizontal rotation angle: 0~270 degrees
Power Supply: 4 AA size batteries (usable alkaline or Ni-MH) (not included)
Lighting times: 100-1500 times (AA alkaline batteries used) (not included)
Recycle time: about 0.5-5s (AA alkaline batteries used) (not included)
Light quantity output control: with 1/8 - stop increment
Color temperature: 5600K + 200K
Flash duration: 1/300s ~ 1/20000s
Item Size: Approx. 19*7.7*5.5cm / 7.5*3.0*2.0in
Item Weight: 306g / 10.8oz

--- Trigger transmitter
Battery Powered: 12V 23A Battery (Not Included)
Trigger Mode: Wireless Control
Working distance: 15m (indoor)

Noticed:
Batteries are not included.

The package contains:
1 * TT520 Ⅱ Flash Speedlite (without battery)
1 * Trigger Transmitter