1、[Advanced BT Technology] : This karaoke machine is equipped with the latest BT 5.3 technology, ensuring a stable and high-quality connection with your devices. It supports a BT connection with TVs and smartphones, and is compatible with mainstream karaoke apps, providing a seamless singing experience. 2、[3D Surround Sound & Voice Conversion] : Our karaoke machine offers a 3D stereo surround sound for a more immersive singing and listening experience. It also features 5 voice conversion modes, allowing you to experiment with different singing styles and have more fun. 3、[Dual Wireless Microphones] : This karaoke machine comes with two wireless microphones, enabling duet performances without the hassle of tangled wires. The microphones have a battery capacity of 400mA, ensuring long-lasting use. 4、[Portable Design with Atmosphere Light] : This karaoke machine is compact and portable, with a built-in 2000mA battery and a handy carrying strap, making it perfect for outdoor activities like camping and picnics. The RGB atmosphere light adds a fun and festive touch to your singing sessions. 5、[Powerful Speaker & Long Play Time] : The karaoke machine has a 10W speaker, delivering clear and powerful sound. It takes 2-3 hours to fully charge and can play for 3-5 hours, allowing you to enjoy your karaoke sessions without worrying about the battery running out.