MyVu Personal Viewer

The MyVu Personal Viewer (320x240 pixel resolution) and later MyVu Crystal (640x480) were sold on apple.com, in stores such as Brookstone, and even from airport vending machines. Popular with makers for its quality and durability, some combined the out-of-production Crystal with a Raspberry Pi to create a low-cost wearable computer. Prior to MyVu's focus on the consumer market, the company was called MicroOptical and targeted the professional market.
$270