Brand new, unused! Instant purchase welcome! These state-of-the-art Bluetooth 5.4 wireless earphones offer a stronger signal and a longer transmission distance of 10-15m (without obstacles), compatible with iOS and Android. Furthermore, the faster data transmission speed reduces latency and noise. They deliver an evolved, clear, and powerful sound, allowing you to enjoy stereo music. The earphones provide a good balance from low to high frequencies, with high resolution and a pleasant crispness. They employ high-performance hardware to reproduce clear highs and rich mid-low frequencies in stereo sound, creating a more immersive experience. A high-quality battery is built-in, enabling long hours of continuous use. You can comfortably enjoy them in various everyday situations, such as training, driving, walking, desk work, working, commuting to school/work, watching DVDs, and conference calls. The 13mm large-diameter ultra-wideband dynamic driver unit provides realistic, immersive high-quality sound. Equipped with a diaphragm, they offer beautiful highs, luxurious mids, and powerful lows, just like a concert. You can enjoy high-quality sound with not only powerful bass but also excellent balance across all frequency ranges. 1600r8108