High GN: 58Wireless trigger sensorElectrical socket outletPC synchronous interfaceRecycle time 3 second (with 4 pcs AAalkaline cell)Support Multi-flash lighting Application(S1/S2 mode)Power saving modeAccurate brightness controlLCD displayMetal hot shoeSupport front curtain synchronousTemperature detection Automatically(overheating protection)Memory functionSUITABLE FOR NIKON D5000, D3000, D3100, D3200, P7100, D7000, D700, P7000 Series, D300, D200, D90, D600, D80, D70 Series, D60, D50, D41 Series etc. Specifications: Circuit design Insulated Gate Bipolar Transistro(IGBT) Guide Number 58meters (ISO 100,105mm) Flash mode TTL, M, Multi Wireless triggering distance 20--30m indoor,10--15m outdoor Flash coverage range 24,28,35,50,70,80,105mm Vertical rotation angle 0-90 degrees Horizontal rotation angle 0-270 degrees Power supply 4XAA size batteries(Alkaline or Ni-MH are usable) Lighting times 100-1500 times(AA alkaline cell used) Recycle time approx. 3s Color temperature 5600k Flash time 1/200s--1/20000s Flash control 8 levels of output control(1/128--1/1) External ports Hot shoe,PC port and eternal charging port (Use MK-SD8A) Additional features FEC, AEB, Manual zoom, Auto zoom, PC port