Google could be a few months away from mass production of a smartwatch, a move that would put it in competition with vendors Pebble Technology, Sony, and Samsung Electronics, according to media reports. Apple is widely expected to enter the fray soon as well. Smartwatches can typically run simple applications by themselves, but are most useful when paired with a smartphone over a low-power Bluetooth link, allowing them to relay information from the phone's applications and Internet connection.