Design: Excellence product design, professional tuning system, markings high density noise reduction, Intelligent for combination chip, professional audio processor, high-quality chipset with 2 channel stereo speakers, stunning Karaoke Live Sound, clear music rhythm with echo reverberation. Connection: Bluetooth or Cable it is a high quality Bluetooth module, it can be used as a speaker, player, recorder. You can connect your device with cable directly to the 3.5 mm jack socket Connect or with Bluetooth and have clear audio sound, lively sound effect. You can always and anywhere singen. brilliantly to karaoke Sing, family Sing, Sing, car stereo, instrument recording, interviews and live etc. Compatibility: Suitable for virtually all iOS and Android smartphones, tablet PC, PC, Laptops and most music apps. The Micro SD card slot support Micro SD cards up to 64GB (not included), and change the song, the Bluetooth distance is up to 10 meters, and support Android, iPhone, iPad, iOS Tablets and all smartphones. Use: Multimedia function keys, you can adjust the music, echo, volume control, PA / R. around the previous and next song mode button. Adjustable echo effect, super environment can with immersive delights. Can be charged by micro USB cable. Gift: a surprised by is Birthday Gift for Children and Adults, it is also a great gift for Christmas, Festivals and parties. You can also improve the atmosphere of the party. Fun:The microphone is a 3 in 1 device, the wireless design can be easily carry, it can be used at home, festivals, parties, stage and with friends, you can enjoy it anytime and anywhere. And with the recording function, you can record all the beautiful sounds in your life. Add colour to your life. Powerful Compatibility:Suitable for almost all iOS and Android smartphones device, tablets, PC, laptops and most music apps. Made with lithium-ion polymer battery cells and built-in 6 safety guards for more safety and more than 1000 recharge cycles. Children like it very much and accompany it:The colour of this gold is very popular with children. When you play with your child at home, you can bring their better company with this microphone and accompany the relationship between parents and children. Note: Do not hit or hold the microphone by hand, or it will cause whistles by static electricity in your hand. If you believe that the sound of the microphone is not loud enough, you can turn on the echo function. This product has circuit protection. But do not let the product fall off, otherwise the battery can not be charged easily and the product cannot be used normally. If the product cannot be charged, please check the following: If there is a problem with the cable and plug accessories, It is because the battery is not used for a long time, excessive discharge, low power consumption or excessive discharge. If you need professional weak current trace, you can try to charge karaoke with a 3V2A socket. Try to wake up the cell itself Whether the battery board is soldered or the battery is short-circuited.