SDRD SD306S Wireless Bluetooth Speaker With Dual Microphone Portable Karaoke Machine For Singing & Live Stream 1. Multi-system compatibility, suitable for karaoke, live streaming, and music listening. Compatible with mobile phones, computers, and tablets 2. Intelligent reverb function, professionally adjustable reverb sound quality 3. Multiple noise reduction functions, 360° intelligent capture of vocal lines, no noise, no pitch breakage, anti-microphone spillage, no howling 4. Built-in mobile phone stand, convenient to use 5. 6 different sound effect modes, pop music, rock music, classical music, high pitch, low pitch, standard, suitable for different scenarios 6. Compatible with mainstream Bluetooth devices such as mobile phones, tablets, laptops, and desktop computers. Connection distance of 10 meters, enjoy wireless freedom Parameters 1. Bluetooth solution: Jerry Bluetooth 4.2 2. Bluetooth range: 10 meters 3. Speaker power: 2 x 10W 4. Speaker specifications: 3 speakers, external magnet 5. Battery capacity: speaker: 1800mAh; microphone: 1500mAh 6. Playback time: 2H - 3H 7. Microphone solution: BK U band 8. Microphone type: single-directional condenser 9. Microphone distance: 10 meters 10. Charging specification: 5V - 2A 11. Charging interface: Type-C 12. Material: ABS 13. Size: about 29 x 14 x 15 cm