[Dynamic Driver Unit] Equipped with 10mm diameter drive units for clear mid to high frequencies and powerful low frequency sound. Dynamic design shows low-frequency sound well, better shows music dynamic performance and more natural sound, bring you high-fidelity heavy bass sound. [Mic & Line Control] With line control function, it enables you to answer/end/reject phone call, also has play/pause/previous/next song function. Built-in highly sensitive omni-directional mic, ensures clear phone call. [IPX4 Waterproof] With IPX4 waterproof and sweatproof, it is suitable for being used when you are working out and wear it on rainy days. It protects against splashing water from all angles. [Ergonomic Design] Made of soft and skin-friendly silicone earplugs for a comfortable wearing. Anti-dropping design makes it fits auricle, stable to wear, hardly feel ear pain after wearing for a long time. [Wide Compatibility] Standard 3.5mm jack is compatible with phones, tablet, laptops, MP3, MP4, MP5 players or other devices with 3.5mm interface.