Last week we told you about Samsung’s unannounced virtual reality headset: a peripheral that enables VR interaction for flagship phones from the world’s largest phone manufacturer. This week we’ve got far more details. First things first, Samsung’s headset is the fruit of a collaboration with Oculus VR, the Facebook-owned virtual reality startup that both literally and figuratively kickstarted the current wave of VR products. Oculus is handling the software-side of the product, while Samsung handles the hardware. The deal is a swap: Oculus gives Samsung early access to its mobile software development kit and helps develop user interface software, while Samsung gives Oculus early access to its next-gen OLED screens. And yes, Oculus is still making its own, gaming-focused, PC-based virtual reality headset; that’s why it needs next-gen, high-pixel density OLED screens from Samsung.