Fangrui Product Details 1. K10 Children Bluetooth Microphone Audio All-in-one Machine 2. Input Voltage: 3.7v 3. Bluetooth Version: 5.0 4. Built-in Battery Capacity: 1800mah 5. Signal-to-noise Ratio: 85db 6. Frequency Response Range: 20hz-20khz 7. Rated Power: 5w 8. Built-in Sponge Cover, Active Noise Reduction Chip, No Sound Breaking No Howling 9. Compatible Singing Accompaniment, One-key Switching 10. Built-in Special Effects To Switch Magic Sounds With One Key 11. Built-in 1800mah Large-capacity Lithium Battery, Longer Battery Life, Can Be Used For 5-6 Hours Without Interruption 12. Built-in Sound Card, High-definition Microphone Core, Live Singing Is More Labor-saving 13. Panoramic Stereo Surround Sound Effect, High-power High-fidelity Hifi Machine Speakers 14. Connect Smart Tv Wirelessly Via Bluetooth, And Turn Your Home Into A Ktv In Seconds 15. Quickly Pair Mobile Phones, Tablets, Computers, Tvs And Other Mainstream Devices 16. Weight: 230 Grams 17. Dimensions: 230x60mm