The world’s first 3G cell phone watch was just unveiled at the 42nd annual Consumer Electronics Show in Las Vegas.

Dubbed the GD910, LG Electronics’ wrist-mounted phone houses a 1.4-inch touch-screen that can be used to dial a number, in case you don’t want to use its built-in voice-dialing option. The GD910 also features Bluetooth connectivity (so it’ll work with your wireless headset), a speakerphone, text-to-speech technology (hear your text messages read to you), and a built-in MP3 player.

The wrist phone also makes video calls, thanks to a small camera in the top right corner of the screen.

The WCDMA (wideband code division multiple access) phone supports the latest 7.2Mbps (megabits per second) HSPA (high-speed packet access) data system, so file downloads should be superfast.

Want to be accessible while going for a swim? LG says the GD910 is also waterproof.

With all of these features you’d expect this phone watch to be huge, but surprisingly, it’s quite small, comfortable, and easy to navigate using your fingertip.

The price for the GD910 hasn't been announced yet, nor are there any carriers publicly committed to the product, but it’s expected to go on sale in Asia and Europe sometime by mid-2009.