Model: MeiKe MK-FC100 - Color: Black - Material: Plastic housing - Built-in 32 high brightness LED emitters - Color temperature: 5500K - Guide number: 15GN - Flash range: 5~150cm - Sync speed: 1/100S - Provides flash or continuous light - Adjustable flash range - Allows set flash exposure compensation to be +3EV or -3EV ideal for macro photography - Easy to judge the brightness of the light with pre-flash function - Flash modes: All / left / right - Left and right flash function makes the object appeared third dimension - Turn to sleep mode after no use in 30 seconds wake up by press any button - Cable length: 48cm - Powered by 4 x AA batteries - Comes with 7 adapter rings: 52mm 55mm 58mm 62mm 67mm 72mm and 77mm diameter - Compatible with Nikon DSLR - Chinese/English user manual included