3.5mm 4-pole (TRRS) stereo mini-plug audio cable with male connectors on both ends. The length is approximately 0.8m. It's a stiff cable with a red sheath. It supports 4-pole terminals used in headsets with microphones. It can be used for audio input and output when connecting compatible devices. Operation has been confirmed. There are no noticeable scratches or disconnections, but please understand that this is a used item and may show some signs of wear. The manufacturer is unknown.