Bluetooth Version: Equipped with Bluetooth 5.1 and JL AC6965E4 chip for stable high-quality wireless connectivity. Battery Charging: Speaker has a built-in 1800 mAh battery (3-hour charge) while each microphone includes a 500 mAh battery (2-hour charge). Usage Time: Up to 5 hours of continuous playback for the speaker and 16 hours for the wireless microphones. Speaker Unit: Features an 8W full-range speaker plus a 2W tweeter delivering a total output of 10W for clear and balanced sound. Playback Modes: Supports multiple modes including Bluetooth TF card AUX input and more for versatile listening options. Dimensions Weight: Measures 190 × 120 × 215 mm and weighs 774 g providing a portable yet robust design. Additional Features: Includes dual wireless microphones one-key vocal cancellation and dazzling music-synchronized LED lighting for a dynamic performance experience.