Headset: Arpara 5K
Manufacturer: Arpara
Launch Price: Unknown
Release Date: Unknown
Headset Type: All-in-One
Display: Micro-OLED Display 5120 X 2560
Refresh Rate: 90Hz
Chip Set: Enhanced Qualcomm Snapdragon XR2
Interpupillary Distance Adjustment: Yes
Weight: 380g
Screen Focus Adjustment: No

Manufacturer: Facebook Technologies, LLC
Launch Price: $599 (£439) (Full Kit)
Release Date: March 2016
Headset Type: VR Headset (PC Powered)
Display: PenTile OLED 1080 x 1200 (per eye)
Field of View(FOV): 90°
Refresh Rate: 90 Hz
Weight: 470 g (16.56 oz)
Tracking: 6 DoF Outside-in

Manufacturer: Facebook Technologies, LLC
Launch Price: $350 (£256)
Release Date: July 2014
Headset Type: VR Headset (PC Powered)
Display: Single OLED at Resolution 960 x 1080 (per eye)
Field of View(FOV): 90°
Refresh Rate: 75 Hz
Weight: 440 g (15.52 oz)
Tracking: 6 DoF Inside-out (marker based)

Manufacturer: Facebook Technologies, LLC
Launch Price: $300 (£220)
Release Date: March, 2013
Headset Type: VR Headset (PC Powered)
Display: RGB LCD with a resolution of 640 x 800 (per eye)
Field of View(FOV): 70°
Refresh Rate: 60 Hz
Weight: 453 g (15.97 oz)
Tracking: 3 DoF Non-positional