Watch phones were once the favorite device of movie spies, but now it's easy to own your own. These tiny phones work in two ways. One type will connect with your Bluetooth-enabled phone and functions in much the same way as a handsfree device. The other type is an actual phone which will need a SIM card. Watch phones are a fun way to keep in touch with friend and loved ones. You can even play games on them. They aren't much bigger than regular watches. Watch the surprise of those around you when your watch phone starts ringing.