[High Sound Quality]-wireless bluetooth microphone,3D stereo sound,So it equips with high-quality speakers to make the sound large enough to provide high-fidelity sound quality. when it connected,it can be used as microphone,Kids toys, Bluetooth speaker etc.[Three Way Connection] -Bluetooth and Audio Jack , and Supporting Micro SD Card, Including By The Bluetooth Devices for Smart-Phones, laptops etc and the great majority singing App Connection. It's also high compatibility so supporting micro SD card max 32GB(NOT INCLUDED) .[Excellent Design]- portable microphone designed to fit the hands of children and adults simultaneously. Mini home KTV for music playing and singing at any time. it fit for 3+ years old children, teen, adults.[Microphone Battery]--Built in 2400mAh rechargeable battery,supporting to play or sing at least 4 hours,it's not only long standby time and but also charges quickly.