Highlights:

& With LED supplement light, and light brightness is adjustable.
& GN50 @ ISO100: WANSEN new large guide number manual speedlite, supporting M modes.
& High sensitivity wireless triggering sensor makes S1 and S2 mode can be used in outdoor environment and the wireless triggering distance is as long as 15m.
& Sound prompt function, different sounds indicate working situations and helps you focus on shooting (Note: the sound can be closed).
& Provides PC port, you can make the flash synchronously by connecting to the PC port.
& Super speed of charging recycle: it only takes 3 seconds in charging after full power output. Even without new batteries, you can get the supercharging speed that it only needs 4~5 seconds; In addition, you can use the external power pack to accelerate charging speed once more.
& High speed continuous shooting: Under the output level of 1/8 or below, WS560 can support the 8FPS high-speed continuous shooting.


Detailed Description:

1.Circuit design: Insulated Gate Bipolar Transistor (IGBT)
2.Guide No.: 50 (ISO 100)
3.Flash mode: M, S1, S2, LED
4.Vertical rotation angle: -7~90 degrees
5.Horizontal rotation angle: 0~270 degrees
6.Power supply: 4 * AA batteries (not included)
7.Lighting times: 100~1500 times
8.Recycle time: approx. 3s
9.Color temperature: 5600k
10.Flash time: 1/200s~1/20000s
11.Flash control: 8 levels of output control (1/128~1/1), 29 levels of fine tuning
12.External interface: hot shoe, PC port
13.Wireless triggering distance: 10~15m
14.Additional features: sound indicator, automatically saving, PC port, power saving
15.Dimensions: approx. 190 * 78 * 60mm/ 7.5 * 3.1 * 2.4in(Extended state

http://www.rakeinme.com/universal-flash-speedlight-for-nikon-canon-olympus-pentax-p-837.html