LG Watch Phone 2008

The prototype is a 4-ounce GSM phone with a 1.5-inch, high res screen, which you navigate using a scroll bar and two action buttons at the bottom of the phone.
You can either talk into the watch and listen to it by holding it up to your ear, or by using a Bluetooth headset. A bar on the bottom of the watch casing is used to interact with the watch phone. The bar actually has three buttons. The user interface relates smartly to these three buttons and typing a phone number looks efficient.