Google is reportedly building an all-in-one virtual reality device that runs without an attached smartphone, computer, or game console, The Wall Street Journal reports.

Instead, it will feature high-powered processors and chips that use the outward-facing cameras' feeds to track the motion of the user's head, according to the Journal. It remains unclear when the headset will arrive. One source told the newspaper that it could be unveiled this year; two others said it is in early development and may not be released at all.

The news comes days after rumors tipped a high-end version of Google Cardboard (above)—the company's disposable device into which you slip your smartphone to view 360-degree videos.

Initial reports pointed to a gadget like the Samsung Gear VR, with "better sensors, lenses, and a more solid plastic casing" than Cardboard. The unnamed product would also allegedly work with a wide range of Android devices.

It appears Google is fighting to keep up with competitors like Samsung, whose $99 viewer launched in November, but requires a branded smartphone. The PC-tethered Oculus Rift, meanwhile, begins shipping next month; upcoming products from HTC and Sony will also run off a computer or game console.

Google made VR headlines last month, when it named Clay Bavor vice president of the company's new virtual reality division. Less than two weeks later, several online job listings suggested Google may be developing its own version of an advanced wearable.

Google did not immediately respond to PCMag's request for comment.

Google Cardboard—a stereoscopic viewer that comes flat-packed with Ikea-style assembly instructions—debuted two years ago at the annual I/O event. The new Cardboard Camera app launched in December, allowing folks to use their smartphone to create a virtual reality photograph of sorts. Then, last month, Google updated its Unity and Android software development kits to add "spatial audio" support for a more realistic experience.

This article originally appeared on PCMag.com.