Lenovo Explorer Windows Mixed Reality VR Headset (used). As you probably know, this type of VR headset relies on your PC's GPU. It works under the Windows Mixed Reality system which can be installed via Steam (then it works with other Steam VR applications too). My rather old GPU (Radeon RX 580) was not powerful enough to drive this unit and it crashed frequently (my GPU crashes with most games thus it is not a fault with the VR headset itself).
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