?Plug And Play - Easy to connect and play, easy to do without pairing. The singing microphone comes with 1 cordless microphone receiver, just turn on the wireless mic and receiver, they will be matched automatically, no need to match manually. When the match is successful, plug the receiver into a device with a mic input jack and you can use it directly. (AUX interface not applicable)?Battery Operated & Rechargeable - The professional karaoke microphone is designed to be powered by 1 AA batteries and the receiver is powered by 1 AA battery. You don't need to buy batteries, the product comes with three 1200 mAh rechargeable lithium batteries that fit right in. Both the karaoke mic and receiver utilize USB-C charging ports for recharging and can be fully charged in just 2-3 hours, and a full charge will last for more than 10 hours of continuous use, eliminating the need to purchase batteries over and over again.?Compatibility & Applicable Scene - The karaoke microphone wireless acceptor fits all input devices with a 6.35 mm (1/4 inch) or 3.5 mm (1/8 inch) microphone connector. Compatible with compatible party speakers, singing machines, amplifiers, PA systems, audio interfaces and more equipment with microphone inputs. Suitable for a variety of indoor and outdoor event use, such as singing, speech, performance, etc.?What You Get - Buy our products you will get: 2 x handheld wireless microphone, 1 x receiver with 6.35mm (1/4 inch) plug, 1 x 6.35mm (1/4 inch) to 3.5mm (1/8 inch) audio adapter, 3 x Rechargeable AA lithium batteries, 2 x anti-slip ring, 2 x mic cover, 1 x USB charging cable, 1 x manual.?Important Usage Notes - For first use, charge the microphone and receiver for 3-5 hours. The K602 wireless microphone only supports microphone input jacks, the receiver must be connected to a device with microphone port with a 6.35 mm diameter. It does not support auxiliary (AUX) or line inputs. (Note: This wireless mic system is not compatible with mobile phones, computers, or tablets.)