K10 Children Bluetooth Microphone Audio All-In-One Machine 1. Input voltage: 3.7V 2. Bluetooth version: 5.0 3. Built-in battery capacity: 1800mAh 4. Signal-to-noise ratio: 85dB 5. Frequency response range: 20Hz-20KHz 6. Rated power: 5W 7. Built-in sponge cover, active noise reduction chip, no sound breaking no howling 8. COMPATIBLE singing accompaniment, one-key switching 9. Built-in special effects to switch magic sounds with one key 10. Built-in 1800mAh large-capacity lithium battery, longer battery life, can be used for 5-6 hours without interruption 11. Built-in sound card, high-definition microphone core, live singing is more labor-saving 12. Panoramic stereo surround sound effect, high-power high-fidelity HIFI machine speakers 13. Connect smart TV wirelessly via bluetooth, and turn your home into a KTV in seconds 14. Quickly pair mobile phones, tablets, computers, TVs and other mainstream devices 15. Weight: 230 grams 16. Dimensions: 230x60mm