HP Reverb G2 Controllers (Pair) 22J70AA B&H Photo Video
Amazon.com: HP Reverb G2 VR Headset with Controller, Adjustable Lenses & Speakers from Valve, 2160 x 2160 LCD Panels, for Gaming, Ergonomic Design, 4 Cameras, Compatible with SteamVR & Windows Mixed Reality :
HP Reverb G2 review | Engadget
Hp Reverb G2 Controllers VR Headset 6 DoF WMR Mixed Reality Motion LEFT | eBay