Valve Index Knuckles EV3 Prototype VR Controller ? Right Hand ? Rare Engineering Model Condition: Excellent pre-owned condition. Tested for basic button and trigger response. This is an authentic Valve Knuckles EV3 prototype controller ? a late-stage engineering validation unit used in the development of the Valve Index VR system. Highly sought-after by collectors and hardware enthusiasts. What you see in the photos is the exact item that you will receive. ? Item Overview Model: Valve Knuckles EV3 Prototype Hand Orientation: Right-hand controller (A/B button layout) Features: Analog joystick, capacitive grip sensors, tracking ring, adjustable hand strap, USB-C charging port Finish: Matte black Includes: Controller only (no base stations or accessories) ? Collector?s Highlights Genuine Engineering Validation (EV3) prototype ? a rare pre-production version of the iconic Valve Index ?Knuckles.? Represents an important chapter in Valve?s VR hardware evolution. Highly collectible and rarely available in single-unit condition. Perfect centerpiece for a VR history or hardware engineering collection. ? Shipping Handling Fast shipping within 2 business days. Securely packaged with tracking and insurance. International shipping available through Global Shipping Program. We take our reputation seriously, we buy and sell online, so we understand the value of trust! Thanks for looking at our listing and supporting our small family business! SHELF: 14(bin 3) SA/DA Keywords: Valve Knuckles EV3, Index prototype controller, SteamVR engineering validation, rare VR hardware, developer edition, VR collector item, Valve Index Knuckles right-hand, pre-release VR controller, Valve prototype hardware.