Duva is a sleep brand from Fitnexa. Duva One is a pair of earbuds under ten millimetres thick and about three grams each, built to be worn all night by side sleepers, and shown at IFA in Berlin in September 2026.

How it works

Each bud shines light into the ear canal to read the pulse and carries a motion sensor for position and movement, which together estimate sleep stages. The charging case sits on the nightstand and measures noise, light, temperature and humidity. Lining the two records up shows what in the room came before a disturbance, and the system answers while the night is still running by raising noise cancelling, adding masking sound or playing audio.

Key considerations

Nothing has shipped. October 2026 and roughly 350 dollars are the stated targets, and the company makes no clinical claim.