1. Pickup: dynamic microphone 2. Speaker power: 4 ohm 5W*2 (speaker output) 3. Frequency response range: 30Hz-10KHz 4. Bluetooth version: 4.2 5. Power supply: 5V 18650 battery 6. Battery capacity: 2600mah 7. Life time: 4-6H 8. Charging time: 3H 9. Working temperature: -10-45 degrees Celsius 10. Microphone material: aluminum alloy 11. A series of sound effects make it more interesting 12. TF card can be inserted, plug and play 13. Not only a microphone, but also a Bluetooth speaker 14. Built-in 32mm ultra-high-definition dynamic microphone core, high degree of reproduction 15. Built-in equalizer, can coordinate treble and bass, and can easily sing treble 16. Size: 245x50mm