( CNN ) -- A new version of Google Glass , the company 's breakthrough entry into the world of wearable tech , is on the way . Current testers , or `` Explorers , '' in Google 's parlance , will get a chance to swap out their current models for the new ones , the company said in a Google+ post . The new Google Glass hardware will work with eyeglasses or shades , and include an ear bud to replace the speaker in the current model . The bone-conduction speaker , which , similar to some hearing aids , literally sends sound waves through the skull to the ear , has been called faulty by some testers . The swap begins Friday and testers will have 60 days to decide if they want new Glass . The roughly 10,000 current testers also be able to invite up to three friends into the program , which requires testers to fork over the current $ 1,500 price of the glasses . `` Over the next few weeks , all Explorers will have the opportunity to invite three friends to join the program , '' the post said . `` They 'll be able to buy Glass online and can have it shipped to their home , office , treehouse or igloo . We 're counting on you to get Glass to the people you think will make great Explorers . '' Google has not said when Glass will go on sale to the general public , though it is expected to be some time next year . Google Glass , worn like regular glasses , has a high-resolution display and lets wearers use voice commands to shoot photos or videos and access features like e-mail , text messaging , Google Maps , Google search and a handful of other apps . It 's not clear what hardware changes will be made to make the new Glass work better with other eyeglasses , though some in the tech press were speculating that users will be able to insert prescription lenses into it . It 's possible to wear both Glass and eyeglasses currently , though many users who have tried have called it awkward . The post did n't say how the overall design of Glass will be tweaked in the next version . Looking a little bit like something out of an '80s sci-fi movie , some have said the device looks ... well ... goofy , at least on the sometimes geekish early adopters who have been sporting them . Glass has been a groundbreaker in wearable tech , a movement that 's shaping up to be the coming wave in the technology world . Samsung has weighed in with Galaxy Gear , a smartwatch that works with its Android smartphones . Google and Apple are believed to be joining the smartwatch market soon , and Pebble and Sony are just a couple of the other names that have wristwatch tech for sale . READ More than a watch : Apple 's entry into wearable tech .
New Google Glass is on the way . Second generation of Glass will work with eyeglasses , have ear bud . About 10,000 testers will be able to invite three friends . Comment: