BLUETOOTH 5.0: Portable karaoke machine is built with the latest Bluetooth 5.0 chip for wireless streaming ensuring instant pairing and providing more stable transmission and longer range. Supports memory card flash USB and AUX input connections Compatible for Android phones TVs tablets and computers. ADJUSTABLE VOLUME: Bluetooth karaoke machine uses sound drivers and advanced digital signal processor for more accurate sound and moderate volume balanced without any noise. Press and hold the volume button to adjust the volume to achieve the ideal volume. COMPACT AND PORTABLE: Portable karaoke speaker system is lightweight and compact perfect for car karaoke family gatherings classrooms presentations and many other situations. With RGB lights you can enjoy karaoke nights at home with your family and friends. UHF MICROPHONE: Portable Bluetooth speaker with 2 UHF microphones is a must for duets and dances. Provides higher power output wider frequency shift better dynamic range and SNR ratio compared to VHF.