· The perfect little flash for background lighting, opening shadows in small interiors or as a broad, flat light for still life set ups. · The built in slave sensor sets off the flash simultaneously with any prime flash within 35'. With a color temperature between 5500k - 6000k, it will balance with any strobe system. · Use this flash as your main or prime strobe to set off other slave flashes by connecting it to your camera via the supplied synch cord.