System Requirement: 100 MB HD for Windows 7, Windows Vista, Windows XP (excluding Windows XP 64-bit) OS, 30 MB HD for Mac OS X v10.4x - 10.6x OS, 1 AA battery (included)
Usage: Add playtime for oculus 2 to more than 2 hours and let you get rid of traditional VR charging troubles such as long link cable, heavy power bank. Give you much better VR gaming experience.