IMPRESSIVE SOUND QUALITY: Riwbox XBT-880 is a bluetooth headphone features with a 50mm large diameter aperture drivers and bulit-in high detail microphone. Wide frequency range reproduces precise deep base and high clarity sound. You can expect comfortable listening experience for both music playing or phone calls. OVER EAR NOISE ISOLATION PADS: The ear cushion is made with protein, high soft elasticity, can be completely isolated from the outside noise when it cover ears, keep your skin feeling soft, comfortable and breathable, very suit for a long time wearing. HANDS-FREE CALL & BUILT-IN MIC: Please Note: Headphones with Microphone and volume control works both in wireless /wired mode. Riwbox Bluetooth headphones provide a quick and stable connection with your Bluetooth enabled devices like cell phones, tablets, pc, TVs within 33 feet, with a high-quality built-in microphone for hands-free calls. Lightweight Stylish Design: Fashion design with reflective metal collocation, gives a luxurious premium feel to the headphones as well as being strong and robust to look great for many years. Foldable headphone for easy storage. Riwbox Bluetooth headphone XBT-880 is a designed for urban life, which takes you into a comfortable, freedom life, when you wear it, you will forget yourself to enjoy a real sound, no any disturb. It is a professional headphones suit for any office workers, students, kids, or teenagers, which bring you comfortable and fashion life.Devices with all sorts of smart phones, tablets, computer or music player.