Features: Support the i-TTL newer for Nikon camera that can be accessed through the camera menu.  In the flash control menu ?€?extend flash function settings you can set the flash parameters?€?; such as switching i-TTL mode/manual flash mode and multiple flash modes(Multi), exposure bracketing, exposure compensation.  Note: Nikon built-in menu can only adjust A?€?s parameters, you can not adjust the parameters B, it can only be adjusted by selecting the button.  Specifications: Colour: Black;  Color Temperature:5500K;  Flash Time:1/200s-1/20000s;  Flash Times:100-1500 flashes;  Transmission Range:20cm-5m;  Flash Ready indication: Approx 2.9s;  Extra function: Power Saving, Overheat Protection Exposure;  Control Type:TTL,Manual flash,Multi-flash;  Circuit design: Insulated Gate Bipolar Transistor(IGBT);  External Interface: Hot Shoe, PC Port, External Charging Port;  Power Supply:4 pcs AA Alkaline batteries or AA NI-MH batteries;  Firing configuration: Two flash tubes can be fired together or singly Flash;  Ratio Control:1 : 8 - 1 : 1 or 1 : 1 - 8 : 1 in 1/2 - stop increments;  Flash Coverage: Approx 80 degree up and down the bottom and 80 degrees left and right;  Control Unit:143 x 73 x 61 mm;  Flash Unit:130 x 126 x 28 mm;  Package Dimensions: (L x W x H)20 x 16 x 13 cm;  Package Weight: 0.88 Kilograms;  Item Dimensions: (L x W x H)17 x 14 x 10 cm;  Item Weight: 0.42 Kilograms;  Package Included: 1 x Mcoplus Macro Flash Light;  1 x 49mm Metal Adapter Ring;  1 x 52mm Metal Adapter Ring;  1 x 55mm Metal Adapter Ring;  1 x 58mm Metal Adapter Ring;  1 x 67mm Metal Adapter Ring;  1 x 72mm Metal Adapter Ring;  1 x 77mm Metal Adapter Ring;  1 x Mini Stand;  1 x Protect Bag;  1 x User Manual;