This wireless microphone has a built-in rechargeable battery. It's lightweight and can be taken anywhere for an instant karaoke party. You will enjoy singing with this extraordinary microphone It's easy to use, all you need to do is connect wirelessly. Easily connect to any device, including Android or iOS phones. Automatic noise reduction design, the sound restores the karaoke experience. There are 5 built-in sound effects, and a variety of K song effects can be switched with one click. Wireless karaoke microphone for birthday parties, family KTV, family karaoke, travel singing, instrumental recording, interviews, speeches. This microphone is beautifully designed and versatile enough to give anyone a great musical experience. Not only children like it, but adults too. Great gift for Christmas, Birthday, Party, Wedding, Father's Day, Mother's Day, Valentine's Day and other holidays. Pickup: Condenser Charging Power Supply: DC 5V Frequency Range: 100HZ-10KHZ Power Supply Mode: Built-in 18650 Battery Battery Capacity: 1800mAh Bluetooth Version: 5.0 Reverb Mode: Echo Effect Reverb Material: ABS Color: Pink, Blue, Black(optional) Size: 245 x 77 x 66mm Weight: 300g Package List: 1 x Wireless Karaoke Microphone