Berlin -- September 7, 2026 -- DUVA, a company created by Fitnexa, unveiled DUVA ONE at IFA Berlin 2026, a set of intra-auricular earbuds built to adjust sound and noise control throughout the night rather than just report on sleep the next morning.
The earbuds respond to changes in the bedroom as they happen
A charging case fitted with an environmental sensor tracks noise, light, temperature and humidity, while sensors in the earbuds monitor heart rate, heart rate variability, sleep position and movement. An AI agent combines these signals with playback status and personal preferences to decide how to respond -- for example, switching from a Bluetooth podcast to locally stored sleep audio once the user falls asleep, or activating active noise cancellation (ANC) or sound masking if a partner starts snoring or traffic noise rises.
Noise reduction can reach 42 decibels through layered technology
DUVA ONE combines passive isolation, hybrid ANC and a Sleep Audio function, plus a transparency mode and adaptive ANC tuning.
Each earbud weighs about 3.3 grams for side-sleeping comfort
The design measures roughly 9.9mm, with two eartip shapes and multiple tip and stabilizer fin sizes offering more than 40 fit configurations.
Battery life reaches 16 hours in the most power-efficient setting
That includes 13 hours of local audio playback with ANC off and 9.5 hours with ANC on. The USB-C and wireless charging case adds up to five extra charges.
A private offline alarm wakes only the wearer
Volume increases gradually, and users can set snooze intervals of 5, 10 or 15 minutes using controls on the earbuds themselves, without needing an active mobile network connection.
DUVA says the earbuds do not record conversations or ambient sound
The company states that no raw audio files from the environment are stored or uploaded, and users can disable specific sensors and delete historical data.
"Sleep doesn't happen in a static environment, so sleep technology shouldn't be static either,