Dulcii Foldable Wireless Bluetooth 4.0 Over Ear Hands-free Call Stereo Headphone Headset with Built-in Microphone, TF Card, FM Radio for Mobile Phone (Black/red) Foldable design and light weight make it more portable to carry Bluetooth 4.0 connection within 10m transmission distance, lower power consumption and faster pairing Built-in microphone for hands-free phone calling, support FM radio function, With TF card slot Soft ear cups are padded with sufficient foam and covered with soft leather for comfortable wearing Up to 8 hours of music playing time and 12 hours of talking time, standby time more than 120 hours