Features: Microphone: Microphone function support durable and practical Bluetooth 5.0 technology 10m durable and practical transmission distance.Long working time: 290mA large battery capacity almost 8 hours traffic consumption.LED indicator function transmission without loss of power consumption.Voice support does not lose clear microphone.It has a long waiting time forever one day needed and compact and easy to carry.Has storage and storage function.3.5mm headphone jack compatible with a variety of devices; Specification: Interface type: 3.5mm; Service time: 6~7h; Bluetooth protocol: 5.0; Charging time: 2 hours; Product type: wireless audio adapter; Working voltage: 0.5A/5V; Applicable type: all-in-one machine; Transmission distance: 10 meters; Packaging includes: 1X cable 1X product 1X bag