Features: [Adjustable and Portable Design] You can adjustable the Headphone to make sure the speaker sponge cover your ear at a comfortable situation. And it it easily to store when not in use or during travels. [Dual Channels] This item is Dual Channels stereo Hi-Fi sound wireless BT Headphone. The high-fidelity speaker to keep sound lossless, bringing for you an excellent listening experience. [Convenient Operation] Easily connect with your smartphone. And build-in microphone for phone call when you in crowded or noisy environment, it is convenience to answering or ending calls. [Comfortable Experience] The metallic Headphone with good elasticity wearing. Wear-resistant leather earmuff to cover ears tightly. Soft cushions cradle your ears, and all materials are lightweight. [Long Standby Time] Built-in 200mAh Lithium battery lasts up 10 hours of music playing / calling time. 200 hours of Standby Time per charge cycle, about 1.5 hours can full charge.