OSVR HDK 2 - Open Source Head-mounted display for OSVR- Works with SteamVR and OSVR experiences 34 lights on the HDK 2 faceplate in total All HDK 2s come brand new but might be unsealed due to customs inspection Dual Display 2160x1200 low persistence OLED silver screen with 441 PPI running at 90 fps,recommended for developers and enthusiasts. Not a consumer ready product High performance dual lens system for ultra-sharp images. Enlarged eye-box for fuss-free setup, right out-of-box Individual eye focus for personalized use without glasses. Diopters cover +4.5 to -2 adjustments to cater to majority of users