OSVR's virtual reality headset is for making the weird VR of the future - The Verge
OSVR HDK 2 – Visualización de Montaje ne la Cabeza, de Fuente Abierta, para OSVR - Funciona con experiencias SteamVR y OSVR : Amazon.com.mx: Electrónicos
Razer's VR headset is designed for developers | TechCrunch
Razer HDK2 review - tethered VR headset for enthusiasts and developers
Razer announce the Razer HDK2, a VR headset releasing in July | Pocket Gamer
Razer's second OSVR devkit is now available for pre-order | Engadget