ROSESELSA Open Free Bluetooth Open Ear Wireless Earbuds TWS

 Advanced Acoustic Structure

Independent Audio Module with Cadence HIFI DSP Chip, along with the new composite Planck dynamic driver, OpenFree achieves ultra-low distortion, ultra-wide sound field, and excellent dynamic range. With an 86% improvement in resolution, it delivers silky & warm human vocal, immersive & surging bass, and delicate & melodious treble.



LDAC/LHDC Codecs Supported

The equal-loudness contour tuning technology that is more in line with auditory characteristics, combined with LDAC/LHDC high resolution codecs, these wireless earbuds faithfully reproduct audio details. The air audio compensation algorithms provide bass enhancement, overcoming the low airtightness of open earphones. 360° panoramic spatial sound effect provides a stereo experience with excellent spaciousness and immersion.



Open Ear Earbuds With Privacy Protection

The 3D ergonomic design, in combination with the Acoustic Beamforming 3.0, enables all-day comfortable and stable wearing. Meanwhile, it isolates the front and back of the diaphragm into independent chambers and outputs sound through the directional transmission panel, making the audio to form within a specific angle. This greatly reduces physical sound leakage by 99% for privacy protection and no more embarrassment.



For Diverse Scenario in Life

With a battery life of 52 hours, OpenFree is sufficient to support 10 full marathons. No fear of long journeys and goodbye to battery anxiety. IPX4 water resistant is suitable for more than 95% of daily life scenarios. The AI call noise reduction algorithm equips OpenFree with crystal clear call experience like face to face.



Dual device connectivity & ads-free app

OPENFREE supports dual-device connectivity with Bluetooth 5.4, allowing seamlessly switch between devices without taking it off whether for office, workout or leisure. Experience a digital lifestyle anytime, anywhere; Concise & ads-free APP supports customized touch controls.