Appearance is all black, the structure is strong and durable; Leather head bow provides comfortable wearing experience; Lightweight, retractable and adjustable; Suitable for different people to wear; Can be rotated at 90 degrees, convenient to single ear listening; Totally enclosed cavity design provides high clear, bass plump vigorous, wide dynamic range sound effect, making sound feeling soft and gentle; More suitable for monitoring and enjoying rock, hip - pop music, etc.