• Authentic Nikon accessory
• External power unit and mounting bracket combination. Reduces flash recycling time by half while nearly doubling the amount of available flashes. Offers convenient, adjustable side-mounted handle for entire camera/Speedlight system, or for creative lighting effects when unit is detached from camera. Camera, flash, and all other necessary connections made within this single unit. Requires four AA batteries. Compatible with SB-900, SB-800, SB-80, SB-28, SB-28DX, SB-26, SB-25, SB-24, SC-22, and D3X, D3S, D3, D700, D300S, D300, D90, D5000, D3000, D60, D40, D80, D70, D70S, D50, D40x,  D2Xs, D2X, D2Hs, D2H, D200, D100, D1X, D1H, D100, D1, F6, F5, F100, N80, N75, and other camera models.

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