Samsung apparently has created the "world's thinnest" watchphone, the S9110, which sports a 1.76-in. touchscreen, Bluetooth, e-mail support and MP3 playback.
In other news, I had no idea such a product existed.
The S9110, which is a svelte 12mm thick, also supports voice recognition and speakerphone. The device supports 900/1800MHz and has 40MB internal memory and a 630mAh battery.
The device will be available beginning in Europe (France, specifically, on the Orange carrier) for approx. $650 USD.
(Interested in the competition? The LG GD910 3G watchphone is where it's at.