Papillon: World's first mechanical mobile phone

These are the first official pictures of the Celsius X VI II Papillon -- the world's first entirely mechanical mobile phone.

The handset, which takes its design inspiration from the visibile mechanical workings of high-end watches, is due to the unveiled at the BaselWorld watch fair in Switzerland.  Constructed from 547 components -- the majority of which are hand-finished -- the Papillon (French for "butterfly") is arguably one of the most excessive mobiles not to bear the Vertu name.

Like all good Swiss watches the clam shell handset is self-powering, relying on the kinetic energy created by the movements of the human body -- a great function for a wristwatch, but probably a real pain for a mobile if you're low on battery and need to make an emergency call.

At present this is just a concept, but if visitors to the Basel World watch fair seem willing to part with the €200,000 (£180,000) asking price, we're sure you can become the proud owner of what will probably become one of the most tiresome gadgets ever made -- unless you're one of those people who paces the room while on the phone.