Cellphone a la Carte

Make this mini cellphone do just about anything, simply by swapping its case

Carry a different phone for every situation, whether you're traveling light or blasting tunes in your car. On its own, Modu is one of the smallest, lightest cellphones yet. But when you want to do more than basic calling, pop it into a new outer shell to give it features like a full keyboard, a wider display or a longer-lasting battery.

Modu fits into a slot in a shell and controls the shell's components as if they were its own. The shells will sell for $30 to $90, and the company will let partners design custom versions, such as a model from Universal Music that could have dedicated buttons for playing songs.

Modu can also add a wireless connection to other gadgets. A camera with the appropriate slot could use the phone's celllar link to e-mail pictures, for instance. Modu launches in Europe in October with several shells that are yet to be announced. It is set to hit the U.S. late next year, when you should be able to plug it into basic shells as well as devices, including a Magellan GPS unit and a Blaupunkt car audio system

Click here to see some of the potential forms the phone could take.

In Any Case

When Modu launches in the fall it will be one of the most versatile cellphones yet (not to mention one of the smallest and lightest). It can slip into any number of shells that boast their own set of features that increase the phone's utility.Modu

Boombox

A case with built-in speakers makes for a mini-stereo, broadcasting music stored on the phone itself.Modu

Stereo

Pop the phone into your car's stereo (the slots on the right are for phones) and it can play stored music on the go.Modu

Navigate

Utilizing the phone's wireless connection, a GPS unit could download maps easily and makes for easy navigation.Modu

Travel

Travel guides for individually cities could be sold in airports and bookstores. Slip the phone in for the most updated visitors info, refreshed daily with tips and alerts.Modu