Nikon SB-500 TTL AF Shoe Mount Speedlight, USA Warranty #4814 Specifications: SB500Commander Function: YesRemote Function: YesGuide Number: 24m/78.7ft. (at ISO 100)Electronic Construction: Automatic Insulated Gate Bipolar Transistor (IGBT) and series circuitryFlash Exposure Control: i–TTL Balanced Fill–Flash with CLS compatible camerasLens Coverage: 24 mm lens (FX format) or 16 mm lens (DX format)Other Available Functions: Test Firing, Monitor Pre–flashes, Modeling flash (LED)Bounce Function (Tilt): Flash head tilts up to 90° with click–stops at 0°, 60°, 75°, 90°.Bounce Function (Rotate): Flash head rotates horizontally 180° to the left and right with click–stops at 0°, 30°, 60°, 75°, 90°, 120°, 150°, 180°Minimum Recycling Time: 3.5 sec. (approx.) with Ni–MH batteries, 4.0 sec. (approx.) with Alkaline–manganese (1.5V) batteriesFlash Duration: 1/1100 sec. at M 1/1 (full) outputRequired Power Source: 2 AA–size batteries of the same bra...