PICO 4 is a

virtual reality headset A virtual reality headset (or VR headset) is a head-mounted device that provides virtual reality for the wearer. VR headsets are widely used with VR video games but they are also used in other applications, including simulators and trainers. VR ...

developed by

ByteDance ByteDance Ltd. () is a Chinese internet technology company headquartered in Beijing and incorporated in the Cayman Islands. Founded by Zhang Yiming, Liang Rubo and a team of others in 2012, ByteDance developed the video-sharing social network ...

. It is designed for virtual reality games and is only available in Europe and East Asia (China, South Korea, Japan and Singapore). It is currently not available in the United States. PICO 4 is

Meta Quest 2 Meta Quest 2 (initially sold as Oculus Quest 2) is a virtual reality (VR) headset developed by Meta Platforms (formerly Facebook, Inc.). It was unveiled on September 16, 2020 and released on October 13. As with its predecessor, the Oculus Que ...

competitor. The Pico 4 uses

pancake lenses A pancake (or hotcake, griddlecake, or flapjack) is a flat cake, often thin and round, prepared from a Starch, starch-based batter (cooking), batter that may contain eggs, milk and butter and cooked on a hot surface such as a griddle or fryi ...

in combination with two small LCD displays https://uploadvr.com/kopin-all-plastic-pancake-optics/ one for each eye in the head mounted display. This technology allows for a lighter headset with an increased image resolution.
The pancake lenses have some drawbacks, the edge of each lens is blurry. For an optimal view the lenses must be centered.
There are a few features that have been introduced in this product, real time hand tracking and a see through mode in low resolution.

Images

File:Pico 4 top view.jpg, Pico 4 top view File:Pico4 side view.jpg, Pico 4 side view File:Screenshot hand trekking.jpg, View of hand tracking in Pico 4 File:Screenshot control panel.jpg, Screenshot of the control panel in Pico 4

References

{{Mixed reality Products introduced in 2022 Virtual reality headsets Wearable devices Metaverse