The BONAOK Wireless Bluetooth Karaoke Microphone is a versatile 3-in-1 portable mic designed in a stylish Pink color. It features a medium diaphragm size and dynamic transducer type, suitable for karaoke entertainment. This handheld/stand-held unit offers Bluetooth connectivity for cordless operation, with an on/off switch and USB charging capability. The microphone also has a polar pattern of boundary type, making it ideal for karaoke performances. The manufacturer offers no warranty for this unit, which is designed in the United States.