ExtremeTech writes Google has revealed some of the hardware specifications for Google Glass. The wearable computing device features a 16GB SSD (12GB of usable memory), a 5MP digicam, 720p video recording, 802.11b/g WiFi, Bluetooth, a Micro-USB port, and an attached display that is the equivalent of a 25" HD image from eight feet away. Battery life is said to be "all day", although Google adds that some features are more battery intensive.
Battery life is a little squirrely; Google notes that “some features, like Hangouts and video recording, are more battery intensive.” We suspect battery life will heavily depend on workload; wireless communication is a significant drain on battery power in mobile devices. Presumably, that’s why Google opted for 802.11g as the maximum transfer rate over the faster, but more power-hungry 802.11n. Google has also updated its Glass-specific Mirror API documents to specify that developers are not allowed to stream advertising to the device, though Google itself still retains that option. Data gathering for the purposes of transmitting said information from the API client to third-party sources are also prohibited.