Arrived in the mail today, Nissin Di866II professional.
Now to understand how to use it.

Usable camera : Canon digital camera, Nikon digital camera, Sony digita camera
Guide Number (ISO100) : 60m, 198ft. (105mm), 40m, 132ft. (35mm)
Focal length Coverage : 24~105mm (18mm with wide angle diffuser)
Power Source : 4 x AA battery
Recycle Time : 0.1-5.5 sec. (Alkaline, NiMH)
Number of Flashes : 150-1500 times
Flash Duration : Manual mode 1/300 (Full Power) , TTL mode 1/300-1/30000 sec.
Energy Saving : Auto power off Off, 10, 15, 30, 45, 60 mins
Stand-by mode 30 sec.
Display off Display screen switch off
Color Temperature : 5600K
Flash Power Control System : Full Auto E-TTL, E-TTL II (for Canon), i-TTL/i-TTL-BL (for Nikon), ADI/P-TTL(for Sony), Ev compensation adjustment on camera
TTL E-TTL, E-TTL II (for Canon), i-TTL/i-TTL-BL (for Nikon),ADI/P-TTL(for Sony) [Advanced] Ev compensation, Manual zoom, Sub-flash allowed
Auto Aperture Flash F1.4-F16 (ISO100), 1/3 Ev steps, [Advanced] Manual zoom, Sub-flash allowed
Manual Power Full-1/128, 1/3Ev steps, [Advanced] Manual zoom, Sub-flash allowed
Multi-flash Frequency-90Hz, 1-90 times, Power 1/8-1/128
Wireless Remote flash Slave:
Slave Digital Slave / Film Slave, [Advanced] Sub-Flash Allowed
Wireless TTL Master / Remote, 4 Channels, 3 Groups (A, B, C)[RMT, RMT2 for Sony], Modes: Off/ TTL/ Manual, TTL Flash Ratio Adjustable
Ev Compensation on flash : -0.3 - +3.0, 1/3Ev steps
My TTL setting : -0.3 - +3.0, 1/3Ev steps
Bounce Function : Upward 90 degree, Left 90 degree, Right 180 degree
Sub-flash: Manual Full - 1/128, 1Ev steps
FE/FV Lock : [FEL] OR[*] Button for Canon, [AE-L] OR [AF-L] for Nikon
Rear curtain sync. : Yes
High speed sync. : Yes
Red eye reduction mode for Nikon: Yes
Slow sync. mode for Nikon: Yes
Red eye reduction mode + Slow sync. mode for Nikon : Yes
AF assist light distance : 0.7-10m
Operation Control mode : Color Display (Auto Rotation)
Firmware Update Terminal : USB
X terminal : Yes
External power pack socket : Nissin Power Pack PS-300, Canon original pack, Nikon original pack (except Nikon SD-9), Sony original pack
Accessories : Soft Pouch, Flash Stand with Tripod screw
Dimension : 134 x 74 x 110 mm
Weight : 380gr. w/o battery