that could be placed in a coat pocket. The first was the Panasonic IC TV MODEL TR-001, introduced in 1970. The second was the Microvision or the MTV-1, and was also the first television that could pick up signals in multiple countries. The project took over ten years to develop and was funded by around £1.6 million in British government grants. Later products used 2G and 3G cellular technology as well as digital TV spectrum.

In the 2010s, specialized