Amazon.com: Razer Hydra PC Gaming Motion Sensing Controllers (RZ06-00630100-R3U1) : Video Games
Razer - Beat Portal 2 with your Razer Hydra and looking for your next fix? Look no further as we are providing fully integrated motion gaming support for Valve's titles, both present
Razer Hydra, With Sixsense Technology Motion Control » CnwinTech
Razer Video Game Motion Controllers for sale | eBay
All The Oculus Rift Controllers - The Complete List! - Rift Info