... 2.4GHz PAL/NTSC switchable Specification:Compatible with TV & Computer Viewing modes: Full color, Black and White, Black on ... : 250g Warranty:one yearFeaturesUM028C is a powerful, portable, hand-held digital magnifier designed for people with low vision. ... . With USB converter (included), it can also work on computer!!PackageContents: magnifier, receiver, USB Converter, World compatible adaptor, ...