My little girl loves this! It has a pair of fake Raybans that enable you to see behind you, a pair of opera glasses and a 'listening device' which needs a battery.
The glasses work great. The eavesdropping device is.....well, iffy to say the least and the opera glasses aren't exactly a pair of Swarovski 8x40's.
But it comes in a nice attache case, with a booklet about spying.
Great fun for kids who like this sort of thing.