B-Speech DSH-230 Calypso Bluetooth Stereo Headphones for Music and Calling (Black) Simple - Use with any Bluetooth capable phone, iPad, PC or iPod for high quality wireless music and calling. Convenient - Light-weight and fold-able. Easily slips into your pocket, backpack or purse. Flexible - Easily switch between calls and music also support voice dialing. Comfortable - The Calypso prove a snug, no-slip fit immersing you in full rich stereo sound. Operating times - Up to 16 hours of music or 18 hours of talk time.