The Grundig UMS 1 is an old cassette tape recorder manufactured by the German electronics company Grundig. It was introduced in the late 1970s or early 1980s and offered basic recording and playback features. The UMS 1 features two-speed operation at 1 78 cm/s and 3 78 cm/s, mono recording, and FM radio tuner. It has a built-in microphone, headphone jack, and accepts external line-in connections. The tape deck is loaded by inserting the tape into the tray, which is located on the top of the unit. The UMS 1 has a compact design and a sleek black exterior, making it a reliable and stylish option for anyone in need of a retro cassette player. Its sound quality is adequate for its time but not considered exceptional by modern standards. Overall, the Grundig UMS 1 is a retro device that still has some functional value and appeal to mid-twentieth century technology enthusiasts.