A. Powerful Sound Penetration The Fedkara Karaoke Machine offers high - fidelity sound quality, able to output powerful and well - balanced sound with relatively low distortion. As a singing toy for boys and girls aged 3 - 12, its volume is relatively loud. B. Long - lasting Battery Life and Portability It has a built - in rechargeable battery, providing about 5 - 10 hours of entertainment. The portable speaker has a compact size of only 2.8 * 2.8 * 2.8 inches, and the microphone handle has a diameter of only 1.4 inches, which a 3 - year - old girl can hold relatively easily. The edges and corners of the karaoke machine and the microphone are soft and smooth, making it relatively safe for boys and girls aged 4 - 8 to use. C. Fun Voice Changer and LED Lighting Effects This mini karaoke machine toy has a built - in LED light show that can turn any room into a kind of concert hall, suitable for the whole family to play together. It can help enhance children's singing ability and promote parent - child interaction. It offers 4 fun voice - changing options, bringing more fun to children. D. Easy to Use When you turn on the children's karaoke machine, the included wireless microphone will connect automatically. It is a toy that children can learn to use relatively easily. The stable Bluetooth technology enables easy connection to smartphones or tablets, supports various applications, and can read TF cards and USB flash drives, providing a variety of entertainment methods. E. Ideal Gift for Children's Creativity This karaoke machine toy is practical, entertaining, and interactive. It is a good toy for boys and girls aged 3 - 12. It can inspire children's love for music and is a suitable gift for back - to - school, birthdays, New Year, and Children's Day!