I purchased this item new and used it a few times, but I no longer need it, so I am selling it. Both the earphones and microphone have been tested and are working. These are wireless earphones with Bluetooth 5.0, featuring an open-ear design for comfortable wear and high-quality sound. They also function as a headset. - Model Name: KDT3000 - Color: Black - Bluetooth Version: 5.0 - Type: Open-ear earphones - Included Accessories: Charging case Thank you for looking.