It was produced by the German watchmaker Junghans, who had already introduced a digital watch called Mega 1 to the market in 1990.
The white dial with two gold hands and a rectangular LC-display is protected by a circular, scratch-resistant mineral glass.
The antenna for receiving the time signal from the DCF77 transmitter in Mainflingen is housed in a leather strap (brown or black) with a folding clasp.
In case of reception issues, the synchronization is repeated every hour until 6:00 a.m.[4] This ensures that the time accuracy of Junghans MEGA radio-controlled wristwatches is... 1 second in 1 million years.
By 1990, Junghans engineers had miniaturized this technology to fit into the case of the digital wristwatch MEGA 1.