Long Battery Life: With a built-in 2000mAh battery for the speaker and an additional 1200mAh battery for the microphone, you can enjoy 5-10 hours of uninterrupted fun. Fast charging ensures less downtime and longer playtime. Whether it's a birthday party, meeting, classroom activity, or outdoor event, this portable Bluetooth-Compatiblespeaker and wireless microphone will meet all your "fun singing" needs. All-in-One Mini Karaoke Machine Bluetooth-Compatible with 2 Wireless Microphone Portable Karaoke Speaker Set Multi-function Music MP3 Player for Kids Adults Gifts for Birthday Party Home. Exceptional Sound Quality: Experience high-fidelity surround sound with the 57mm full-range speaker and DSP chip of mini karaoke machine, delivering immersive audio with crystal-clear highs and deep bass. The advanced audio driver and digital signal processor ensure clear sound and high volume while preventing annoying microphone feedback. Fantastic Gift: A stylish and user-friendly mini karaoke machine that both adults and children can enjoy. With this ultra-portable karaoke machine, every place becomes a stage. It makes an excellent birthday or holiday gift for your child, friends, or family members. It's also a great Christmas gift for both young and elderly recipients. Bluetooth-Compatible5.0 Connectivity: Instantly pair with your mobile devices for a highly stable connection. The wireless microphone of all-in-one karaoke machine automatically connects to the speaker upon startup, allowing a range of up to 32 feet. Enjoy the convenience of TF card mode and OTG mode (requires separate purchase of a phone connecting cable) to store and play MP3 songs, along with a headphone output port on the back.