Sensitiveness and audio quality: 6D double coil with Double Bass, metal cavity 1080Db; sensitivity and fidelity. definition calls: voice fiber and deep noise reduction help block external noise for clearer voice calls and purer sound. Ergonomic design: ergonomic design for comfortable wear. Stable during activity: upgraded firmly to stay securely in place during running, fitness and other sports. Use scenarios Daily commuting and office use: enjoy music and make clear calls during travel or work, with reliable comfort and audio clarity. Training and workouts: stable fit ensures the earpieces stay in place during running, gym sessions, or other sports, allowing uninterrupted listening and communication. Travel and outdoor activities: comfortable for long wear and effective noise reduction helps maintain focus and clarity in varied environments.