BT 5.0: Portable karaoke machine is built with the latest BT 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. LONG BATTERY LIFE: This karaoke speaker has a built in 3000mAh high efficiency lithium ion battery to ensure uninterrupted music playback, and the microphone has a built in 1200mAh high efficiency lithium ion battery. Whether it's indoor dancing or outdoor party, you can play it as you like. UHF MICROPHONE: Portable BT 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. 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. ADJUSTABLE VOLUME: BT 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.