Designed specially for travelling with 90 degrees rotation ear-muffs and carrying bag for easy storage. With adjustable slider and soft padded headband allow you to get the most comfortable enjoyment. Built in 200mAh Ultra-large capacity rechargeable battery, can work for 20hrs on a single charge. Built-in dual 40mm large-aperture drivers, produce an immersive real-life dynamic music experience. Using the latest bluetooth 5.0 technology for best connection and lag free music experience.