The Verge's Joshua Topolsky has written a lengthy piece about his experiences using Google Glass, the company's new on-face computer.
Google Glass is a tiny computer that mounts to an eyeglass frame and has a small display that is visible only to the user. The wearable device has a built-in camera that sees what the wearer sees, GPS, Wi-Fi, and Bluetooth connections. The glasses can handle many of the same tasks as smartphones, including giving driving directions, sending text messages, showing weather reports and more.
The device gets data through Wi-Fi on its own, or it can tether via Bluetooth to an Android device or iPhone and use its 3G or 4G data while out and about. There's no cellular radio in Glass, but it does have a GPS chip.
Article Link: Google Glass Can Use iPhone's Data Connection Via Bluetooth