This professional studio flash set comes complete with two reliable stands and soft boxes. The Excella Prisma is a professional flash unit. The Prisma series is available in four different intensities, varying from 300Ws up to 1000Ws. The flash unit has among other things a built-in slave and is continuously variable. This flash unit also has a convenient sound signal which indicates that the flash unit is recharged and ready to use. The Prisma studio flash unit has a stylish design and is compact and light weight.