Alongside the first details of its Mirror API for Glass apps, Google has published a list of technical specifications for the head-mounted device. Glass features a 640 x 360 display that Google says is the "equivalent of a 25-inch high definition screen from eight feet away," a 5-megapixel camera capable of 720p video, and — as revealed in an FCC filing — audio that comes via a bone conduction transducer. There will be 16GB of flash storage on-board, with 12GB actually usable, and it will sync with "Google cloud storage" — presumably Google Drive. Glass will feature adjustable nose pads in a frame that Google says will "fit any face," and you'll get extra pads in two sizes.

Battery should last "one full day of typical use"

As for battery life, Google claims Glass will last up to "one full day of typical use," though notes that certain applications such as video recording and Hangouts will have a greater impact on endurance. While Glass charges over a Micro USB connector, Google encourages owners to use the packed-in USB cable for a "long and prosperous" life. Connectivity-wise, Glass supports 802.11b/g Wi-Fi and is compatible with "any Bluetooth-capable phone," though functionality will vary. The list of specifications also mentions an app called "MyGlass" for phones with Android 4.0.3 and above; this will enable GPS and SMS support. Some of these details were known from our extensive first-hand preview of Google Glass, but we now have more solid information on what exactly to expect from those first units rolling off the production line.