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Valve's updated model for their "Knuckles" SteamVR controller suggests input parity with Steam Controller (able to play entire Steam Library in Bigscreen-esque environments) : r/oculus
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Valve's Vive Knuckles Controllers revealed - The Ghost Howls
Valve's VR Knuckle Controllers Will Let You Flip The Bird | Digital Trends
Valve Reveals News Knuckles VR Controllers With Improved Battery