Open-ear comfort and hazard awareness: The open design of the airborne conduction headphones allows for a truly painless and safe use. No need to insert the headphones into the ear canal, so the ears will not feel sore even after a whole day of listening to music. These headphones also allow you to hear surrounding sounds and avoid potential dangers while enjoying your music. 【Powerful Stereo Sound Effects】】 TRUEFREE O1 wireless earbuds are equipped with 16.2mm drivers that deliver immersive sound with clear treble and rich bass. They adopt unique directional sound transmission technology, allowing direct sound transmission to the ear, thus improving the traditional noise leakage problems. So you can focus on your music, podcasts or work. Advanced Bluetooth 5.3 & Instant Pairing: With advanced Bluetooth 5.3 technology, you can enjoy twice as fast transfer speed (75% higher than previous generation) and more stable connection. Open the charging case cover, the wireless earbuds will pair with each other automatically, and you just need to select "TRUEFREE O1" from the Bluetooth list of your device to connect, avoiding complex operations. 【Crystal Clarity Calls】 Equipped with 4 microphones as well as ENC noise reduction technology, the headphones can filter ambient noise and clearly pick up your voice during phone calls, zoom meetings, etc. 【45 Hours of Ultra Long Playtime & Low Latency in Game Mode】 With up to 10 hours of playtime on a single charge and 45 hours of battery life with the charging case, these wireless earbuds provide comfortable and uninterrupted listening. In game mode, the headphones can accurately capture the sound of steps, shots and other crucial sound cues, helping players quickly identify enemy positions and gain competitive advantage. Truefree Écouteurs sans fil O1