Berlin – September 10, 2026 -- Fitnexa's DUVA brand unveiled the DUVA ONE sleep earbuds at IFA Berlin 2026, a system designed to adjust sound and noise cancellation throughout the night rather than just report on sleep quality after waking.
The earbuds react while you sleep, not after you wake up
Most wearable sleep tech only analyzes data in the morning. DUVA ONE instead pairs low-profile earbuds with a sensor-equipped charging case and a companion app to respond in real time. Users can start the night streaming a podcast over Bluetooth, and once asleep, the system can switch to locally stored sleep sounds to save battery. If a partner starts snoring or street noise increases, the earbuds can adjust active noise cancellation (ANC) or add a masking sound.
Sensors track heart rate, movement, and room conditions
PPG and motion sensors in the earbuds estimate sleep stages while tracking heart rate, heart rate variability, sleeping position, and movement. The charging case monitors ambient noise, light, temperature, and humidity. An AI agent combines these signals with playback status and user preferences to choose how the device should respond, with sleep sounds, playback duration, ANC strategy, and nighttime interventions adjustable in the DUVA app.
Noise cancellation reaches up to 42 decibels
DUVA ONE combines passive isolation, hybrid ANC, and sleep sounds for noise reduction of up to 42 dB, alongside a transparency mode and adaptive ANC calibration. Each earbud weighs about 3.3 grams with a low-profile 9.9mm design, and two tip shapes with multiple sizes and stabilizing wings offer more than 40 fit combinations for side sleepers.
Battery lasts up to 16 hours in its most efficient mode
The earbuds run up to 16 hours in the lowest-power configuration, including 13 hours of local audio playback with ANC off or 9.5 hours with ANC on. The USB-C charging case, which also supports wireless charging, adds up to five additional charges. A private offline alarm gradually increases in volume and offers snooze options of 5, 10, or 15 minutes via on-earbud controls, waking only the wearer without needing an active phone connection.
DUVA says the device does not record conversations or store ambient audio
Fitnexa states that DUVA ONE does not record conversations, store ambient sound, or transmit raw environmental audio. Users can disable individual sensors and delete historical data. Fitnexa founder Diego said sleep does not happen in a static environment, so sleep technology should not remain static either.
DUVA ONE launches in October 2026 at $349.99
The device is set to launch in October 2026 with a target retail price of $349.99. Fitnexa plans to sell DUVA ONE in the United States, Canada, the United Kingdom, the European Union, and Australia.