Features: 1. For Marshall headset connection cable, the second generation of Bluetooth headset with plus or minus key adapter cable, headset upgrade cable. 2. Support: for Marshall Monitor, the second generation, Marshall Bluetooth and other 3.5MM interface interchangeable headphones. 3. with plus and minus keys, support calls, music pause, up and down the song, convenient and practical. 4. unstretched length of about 1.3 meters, straightened length of about 1.8 meters. Specification: Color: Black Style: standard version / microphone version Interface: 3.5MM Support: For Marshall Monitor, II, Marshall Bluetooth and other 3.5MM interface interchangeable headphones. Package Included: 1*Audio Cable Note: 1. Due to manual measurement, please allow 1-3mm error. Please make sure you don't mind before ordering. 2. Please allow 1-3g weight error. Please make sure you don't mind before ordering. 3. Due to different lighting of photos and differences in monitors, the pictures may not reflect the actual color of the object. Please make sure you don't mind before ordering, thanks!