Mark Zuckerberg has unveiled a new VR headset, the Quest Pro, at an online event held for developers.

With a price tag of $1,499 (£1,370), Quest Pro is almost four times the price of Meta's current headset, the Quest 2, which starts at $399.

It boasts thinner lenses, a curved battery around the head strap at the back, and controllers which self-track.

The headset also allows users to see their real environment around the periphery of the screen.

Quest Pro has mixed reality capabilities, unlike its predecessor - meaning digital content can be viewed overlaid on the real world.

Meta boss Mark Zuckerberg said mixed reality was "the next major step for VR".

Gartner analyst Tuong Nguyen said the high launch price made it a device more suited to "high-end, enthusiast and potentially enterprise users" than mass-market.

Microsoft CEO Satya Nadella also announced that the office platform Windows 365 will be available on it, as Meta seeks to position mixed and virtual reality as a work tool as well as a form of entertainment.

The firm Meta, formerly known as Facebook, is betting its future on the creation of a metaverse - a virtual world in which people can both conduct their everyday lives, in the form of avatars, and explore fantasy virtual spaces.

Many tech firms are building their own metaverses but it is likely to be several years before any exist.

Meta's existing virtual reality world, Horizons, has received mixed reviews so far, and there have been reports of avatars carrying out violence and sexual assault within it.

Chief Technology Officer Andrew Bosworth has also admitted that "it will be a while before there are enough headsets out there".

Paolo Pescatore from PP Foresight said it felt like the tech was being "fast tracked" into people's hands. "There's no demand, why rush," he said.

VR apps

There was much talk about virtual reality apps during the event, some of which have proved very lucrative for their developers, like the VR version of the video game Resident Evil 4, which made $2m in revenue in its first 24 hours.