Got three, one of the original small ones on the mantelpiece (not switched on) one received as a present (never used) and one I bought for my late mum, used once before being put back in the box for posterity (under my bed)
Nice idea, but used about as much as a Clairol Foot Spa, every boot fair has a sprinkling of them
You can have one of my boxed ones for the price of postage, know the under bed one works from a SD card