Pretec unveiled a necklace type USB memory 'i-DISK VOGUE/HIP-HOP' targeting female users during Computex Taipei 2007.
This jewelry type pendent unit supports USB 2.0/1.1 with memory capacity of 1GB to 8GB and it is available in two colors of silver and gold. The i-DISK VOGUE comes with a thick chain necklace while the HIP-HOP comes with thinner chain.
I guess it's more like a piece of jewelry rather than a gadget!
Source: Aving