The Myvu Crystal is a display intended for private viewing, particularly of iPod videos. It is fairly inexpensive and has a decent resolution for its size, but normally hinders your vision. If you intend to buy a Myvu Crystal for the purpose of wearable computing, make very sure that you buy the "Universal" edition (or the all-in-one edition"), as the standard (iPod) edition is only usable with iPods. It has been successfully modified into one-eye head-mounted displays: * * ,