Supports various smartphones with Apple and Android systems. Speaker power: 4 4W*2 Signal-to-noise ratio: 85dB Frequency response range: 15020KHZ Audio interface: 3.5mm stereo headphone plug Built-in A-grade 800MA lithium battery with sufficient capacity, very convenient to charge Charging time: 3 to 5 hours Play time: 5-8 hours on full charge at medium volume Power adapter requirements: input voltage: 220V output voltage: 5V current 1A/2A Product size: 230*55*10MM All-in-one Karaoke Microphone Toy: Portable handheld microphone can be used as a microphone, karaoke machine, high-quality speaker, singing recorder. A convenient multifunctional microphone toy that can bring fun to your kids anytime, anywhere. Great Toy Gift for Girls and Boys: The karaoke microphone toy allows you to listen and sing anytime, anywhere. Perfect for kids and adults to practice and share favorite songs on music apps. Great choice for a wireless karaoke microphone as a gift at a birthday party!