Compact and powerful: Built-in 10W speaker with stable transmission up to 10 meters delivers strong performance for endless karaoke fun. Versatile fun: Comes with 2 microphones and 7 voice effects, including karaoke mode, original sound mode, echo mode, male voice mode, female voice mode, children's voice mode, and magic sound mode. Switch modes easily by pressing and holding the EFF button on the microphone for 3 seconds. Long-lasting playtime: Equipped with a built-in rechargeable 1500 mAh battery, providing up to 3-6 hours of continuous use. Portable design makes it ideal for parties, trips, and on-the-go entertainment. Multifunctional playback system: Features Bluetooth 5.0 connectivity, supports TF card, USB flash drive, and AUX-In input. Suitable for both indoor use in classrooms, living rooms, and conference rooms, as well as outdoor use in parks, on beaches, or at squares. Ideal gift: A great gift choice for kids, perfect for birthdays, Christmas, Children's Day, and other special occasions. Specifications: - Compatible with Apple and Android systems and most smartphones - Speaker power: 10W - Signal-to-noise ratio: >85dB - Frequency response: 150Hz20kHz - Source input: 3.5mm stereo headphone jack - Microphone battery: 1200mAh (each) - Built-in battery: 1500mAh - Charging time: 23 hours - Playback time: up to 6 hours - Power adapter: Input 220V, Output 5V, Current 1A/2A