Razer says the HDKs have an "Image Quality Enhancer" (IQE) technology for reduced screendoor effect. The HDK also has diopter adjustments ranging from -2 to +4.5 for users that need corrections for their vision, something both the Vive and the Rift lack.
Powered by the OSVR ecosystem - an open source ecosystem supporting multiple types of hardware brands - you will be able to choose from a range of controller options.
The HDK 2 is compatible with SteamVR games that can be played with a traditional controller, as well as titles written with OSVR's own SDK.
The headset will have a $400 price tag when it launches in July.