Right now on Microsoft VR website! very close to RIFT in quality (sometimes even better: lower screen door effect)
https://www.microsoft.com/en-ca/store/b/virtualrealityDevice Specifications
Two high-resolution liquid crystal displays at 1440 x 1440
2.89” diagonal display size (x2)
Front hinged display, so you can flip the headset up while working
Up to 105 degrees horizontal field of view
Display refresh rate up to 90 Hz (native)
Built-in audio out and microphone support through 3.5mm jack
Single cable with HDMI 2.0 (display) and USB 3.0 (data) for connectivity
Inside-out tracking
4.00m cable