Hunter"s Specialties I-Kam Video Eyewear: * Incorporates an advanced mobile video recorder into a lightweight pair of glasses * It has 4 GB of built-in memory for up to 2 hours of recording * The glasses will also support up to 32 GB micro SD card for additional recording apace * Each pair of glasses includes 2 pairs of interchangeable lenses in polarized black and clear, as well as a hard bodied carrying case, cleaning cloth, AC adapter and instruction manual * Completely hands-free * The video can be viewed by connecting the glasses directly to a PC/Mac with the supplied USB cord * High quality internal components with enhanced support structures for improved performance and durability * USB: 2.0 (HS) * Power supply: embedded 550mAh Li-polymer rechargeable battery * Easy to use