New and unused. Instant purchase is OK. Ships within 24 hours. Cutting-edge Bluetooth 5.4 technology for stable connection & automatic pairing: Equipped with the latest Bluetooth 5.4 chip, significantly improving connection stability and low-latency performance compared to previous models. Compatible with the HFP profile, allowing you to enjoy smooth audio experiences with videos and games. Hi-Fi deep bass stereo & immersive sound: Adopts a 14.2mm large-diameter dynamic driver, faithfully reproducing deep bass, extended mid-range, and clear high frequencies. Achieves natural and powerful sound quality without the need for equalizer correction. You can experience an immersive feeling like being in a concert hall or movie theater, and enjoy realistic sounds not only for music but also for movies and games. High-quality calls with ENC noise-canceling microphone: Equipped with a high-sensitivity microphone and ENC noise reduction technology. Reduces ambient noise by up to 90%, delivering the other party's voice more clearly. Smooth conversations are possible as if you were talking face-to-face with these wireless earphones, even in noisy environments such as train stations, busy streets, windy outdoors, and gyms. Ultra-lightweight design & comfortable fit: The earphone body weighs only about 3g per ear, making it ultra-lightweight. It does not put a burden on the ears even after long hours of wear, realizing a comfortable fit without pressure. In addition, the ergonomic design fits snugly in the ear and is designed to prevent it from falling out even during exercise. The slim shape that doesn't stick out of the ear is also ideal for sports, running, and gym training. Up to 48 hours of playback & USB-C fast charging: Up to 6-8 hours of continuous playback with the earphones alone, and up to 48 hours with the charging case. You can use it for a day, as well as for business trips and travel without worrying about running out of battery. Supports USB-C fast charging, and the case can be fully charged in about 1 hour.