[Ultimate Comfort Experience] - Made of liquid silicone and nickel-titanium memory steel, the truefree O2 headphones feature ultra-comfortable and secure on-ear hooks. Weighing only 8g per earbud, you'll barely notice them while on the go, cleaning or working out, ensuring a smooth and enjoyable experience throughout your day. [Situation Awareness] - Designed with open ear concept and advanced air conduction technology, these wireless earbuds allow you to enjoy your favorite music while staying aware of your surroundings. This feature improves safety during activities such as driving, running, cycling and hiking, keeping you both entertained and alert. [Immersive Sound with Less Leaks] - Featuring 15mm speakers, bass enhancement algorithm and advanced directional sound transmission technology, these headphones deliver natural, balanced sound with minimal leakage. Enjoy a private and immersive listening experience wherever you are. ️ [Clear Calls with Four Microphones & ENC] - Equipped with dual microphones and environmental noise cancellation (ENC) technology, these headphones accurately capture your voice and eliminate background noise. Get crystal clear call quality for smooth communication in any environment. [Dual Connection & App Control] - Download the truefree App from Apple Store or Google Play to customize your settings and manage the multi-point connection function. Seamlessly switch between two connected devices, providing convenience and flexibility in your daily routine. [22 HOURS LISTENING] - Enjoy up to 6.5 hours of listening on a single charge, with the stylish charging case extending the total listening time to 22 hours. In addition, the 76ms gaming mode ensures that these headphones are perfect for gaming and other activities, making them an ideal companion. Truefree O2 Écouteurs Ouverts