Speaker power: 4 3WSignal-to-noise ratio: 85dBFrequency response range: 15020KHZAudio interface: 3.5mm stereo headphone plugCharging time: 2 to 3 hoursPlaying time: 3-5 hours at medium volume with full chargePower adapter requirements: input voltage: 220V output voltage: 5V current 1A/2AProduct size: 260*55mmHIGH QUALITY SOUND - Wireless bluetooth microphone, 3D stereo, so equipped with high quality speakers to make the sound loud enough to provide high fidelity sound quality. Once connected, it can be used as a microphone, children's toys, bluetooth speaker, etc.Two-way Connectivity - Bluetooth connection and 3.5mm audio jack connection, including connection for Bluetooth devices and most singing apps for smartphones, laptops, etc. It is also highly compatible, so it supports micro SD cards up to 32GB (not included).GREAT DESIGN - Portable karaoke microphone designed to fit both children's and adult hands. Mini family KTV, play music anytime. It is suitable for children, teenagers, adults from 4 years old.BEST GIFT - Wireless Karaoke Microphone has unique packaging and beautiful design, suitable for parties, weddings, travel, family anywhere to play and sing. It is also a unique gift for your child's family or friends, the gift you want.