1. With USB power port function.
2. Bi-housing fashion design--with plastic and metal housing.
3. Slender size (4cm max. depth) and light weight.
4. Enable to fit big European socket.
5. With ring hook to hang.
★Enhances USB output power:
Makes USB-charging on cars more efficient and stable, hence achieving higher efficiency of notebook PCs, cell-phones, Ipods etc.