1. Condenser microphone, supports all mainstream karaoke software. 2. Support wireless Bluetooth connection for mobile phones/tablets/laptops/desktops and other devices. 3. Six sound effects, switch at will. 4. HiFi sound, the sound quality is more fidelity. 5. Support AUX insertion, the sound is more stereo. 6. Built-in large capacity battery, long service life. 7. Suitable for various scenes such as family entertainment, friends gathering, outdoor karaoke and so on. parameter 1. Bluetooth solution: Jerry Bluetooth4.2 2. Bluetooth distance: 10 meters 3. Material: ABS plastic 4. Speaker power: 2x15W 5. Speaker specifications: 4 inches, external magnetic 6. Battery specification: built-in 18650 2000mAh 7.4V 7. Playing time: 2H-3H 8. Charging method: charger specification: 5V 2A 9. Charging time: 3H-4H 10. Main functions: Bluetooth, TF card, AUX, FM, U disk, with K song mode 11. Accessories content: data cable + audio cable + two wireless microphones 12. Microphone solution: BK U band 13. Microphone distance: 10 meters 14. Microphone battery specification: built-in 18650 1500MA 3.7V 15. Microphone charging time: 1H-2H 16. Microphone type: dynamic pickup 17. Product size: 32x16x16cm 18. Single machine net weight: 2.6kg