I'm selling this because I bought it but rarely used it. Used a few times. ◾️ A new music experience in the industry: Ear Cuff Type A new concept of "not blocking the ears" Bluetooth earphones that can be clipped onto the ear like an accessory. ◾️ Transmits vibrations to the bone, delivering sound to the brain By directly transmitting sound vibrations to the skull, sound can be transmitted without going through the ears or eardrums. ◾️ Doesn't put a strain on the ears Wearing regular earphones for a long time can cause itchy or painful ears, and in severe cases, "otitis externa" or "hearing loss," but this method can better protect your ears. ◾️ Prevents sound leakage Equipped with excellent sound leakage protection, allowing you to immerse yourself in the world of music. ◾️ Cutting-edge Bluetooth 5.3 & High-Quality Sound Performance Adopting the latest Bluetooth 5.3 technology, it achieves high-quality sound. In addition, it is equipped with a high-quality sound driver that exceeds CD quality, reproducing delicate musical nuances and rich expressiveness without missing anything. Furthermore, the ear hooks are designed to fit the shape of the ear, providing a comfortable fit and keeping your ears comfortable even during long hours of music listening. ◾️ Lightweight and excellent fit The ear hook type reduces the burden on the ears even during long hours of use, providing a comfortable fit. Because it is lightweight, it can be used without putting a strain on the ears, and it can be used comfortably in active scenes such as sports and jogging. ◾️ High-performance microphone and AI technology Bone conduction earphones equipped with a high-performance microphone. Two MEMS microphones for calls are installed, and dual-microphone noise-canceling technology is adopted. In addition, by utilizing AI technology that distinguishes between ambient noise and speech, it is possible to deliver clear audio to the other party. Useful for calls and remote meetings. ◾️ Continuous playback time is up to 36 hours Achieves continuous playback of about 8 hours or more on a single charge, and can play for up to 36 hours with the charging case. ◾️ Supports fast charging It also supports Type-C fast charging, and can be fully charged in 1 hour, and can play for 1 hour with a 10-minute charge.