Developers working with the Oculus Rift virtual reality headset now have a new tool at their disposal: the Developers Kit 2. This updated version of the Oculus Rift developers kit headset takes the best features of the Crystal Cove prototype and improves on them, for a $350 price tag. At CES 2014 in January, Oculus Rift displayed the Crystal Cove as a forerunner to its next development kit.