The Omnichord is an electronic musical instrument that was released in 1981. It features an automatic accompaniment function and a harp sensor, allowing users to easily accompany songs by pressing chord buttons and sliding their fingers on the harp sensor. The Omnichord gained popularity for its portability and unique electronic sounds, reminiscent of the 80s. The new model, OM-108, reproduces the sound of the classic OM-84 with real analogue circuitry. It also includes a selection of retro and new tones, a layer function for sound expression, updated rhythm selection, and the ability to play 108 chords. The OM-108 is small, lightweight, and battery-powered, making it easy to play anywhere. It also includes various real-time control functions and the ability to expand sound with MIDI. Overall, the Omnichord has stood the test of time as a unique and beloved musical instrument.
https://www.suzuki-music.co.jp/special/omnichord_om-108/en/index.html