The Metronic Gemini is a device that Receives up to 41 FREE digital channels & allows you to record from 1 digital channel onto your DVD Recorder & view another channel at the same time. It features Twin Tuner technology, which is basically an additional tuner allowing the viewing of an additional channel, which you can then connect to your Recording device and record two separate channels which are airing at the same time. This product is ideal if you often find yourself missing programmes due to scheduling clashes. For Convenience, it has two scart sockets, 5V power for antenna’s if you are using it without an roof aerial wall jack. Additional Features include, Parental Lock, Subtitles and 4:3 Widecreen format.