Microsoft's Mobile Memory Mouse 8000 impressed us, despite its heady price.

Microsoft's Mobile Memory Mouse 8000 is a well-designed, full-featured, and - at around £55 - expensive input device.

This wireless mouse worked great on all desktop surfaces; the Mobile Memory Mouse 8000 even worked on rough or unusual surfaces such as glass and the keys of a keyboard.

Powered by a rechargeable nickel-metal hydride battery, the Mobile Memory Mouse 8000 can charge through a small cable that latches magnetically from the mouse to a 2.4GHz USB receiver that also doubles as a 1GB flash drive.

And if that doesn't suit, you can connect the Mobile Memory Mouse 8000 via Bluetooth, too.

Business travellers will appreciate the flexibility the Mobile Memory Mouse 8000 offers; other people will find its price too high.