This product enables Nikon cameras and flash execute high-speed synchronous photography, as well various creative flash functions, it includes the highest performance l-TTL ,BL, FP and other functions, the maximum shutter synchronization speed up to 1/8000 S. TR -331 Features: TR-331 uses a global free FSK 2.4GHz wireless channels, 15 selectable channels. The maximum control distances up to 65Meter. Use the LCD to display channel, power, and functional mode. Ultra-low power consumption for standby; the standby time of TR-331 TX transmitter is more than 1000 hours, the TR-331 RX receiver standby time is more than 500 hours. Compatible with all Nikon DSLR cameras. Compatible with Nikon SB-900, SB-800, SB-600, SB-400 flashgun with various creative modes. TR-331 Functions: Simultaneously control multiple flash or studio lights Support for flash's auto-focus feature. Support a variety of shutter speeds, its max up to 1 /8000s. Through the PC socket controls the studio lights and other brands flash with PC interface. Compatible device with TR-331 TX Compatible with Nikon CLS DSLR cameras D3, D700, D2 series, D300S, D300, D200, D90, D80, D70, D70S series, D5000, D3000, D60, D50, D40, D40X series, F6 and so on. Compatible with Nikon l-TTL COOLPIX Camera COOLPIX8800, COOLPIX8400, COOLPIX P6000, COOLPIX P5000, COOLPIX P5100 and so on. Compatible with other DSLR camera compatible with Fujifilm S5 Pro and Nikon flash camera. TR-331 RX compatible device Compatible with Nikon's flash SB-900, SB-800, SB-600, SB-4OO. Compatible with other brands flash Compatible with Nissin & Nikon camera's flash. TR-331 Package Include" 1 x TR-331 TX transmitter 1 x TR-331RX receiver 2 x CR-2 Lithium Battery 1 x Product Manual 1 x PC+3.5 cable 1 x PC+6.3 cable