Google: Updated Google Glass Hardware" class="x-large" credit="" src="https://adage.com/images/bin/image/x-large/google-updatedgoogleglasshardware-13.jpg" url="" />

Yesterday on G+, Google revealed the latest update to its Google Glass hardware. Now the wearable tech sports a mono earbud and can accommodate prescription lenses. According to The Verge, the announcement comes after Google invited current beta testers of Glass, or Explorers, as they're known, to trade in their old hardware for the new version and follows news that Google recently has ramped up production on the device. Explorers are now allowed to invite three friends to purchase Glass, for $1,500 a pop.