Technical parameter Output power: 5 W. Frequency range: 90 Hz - 18 kHz. Bluetooth frequency range: 2.4G-2.480Ghz. Wireless transmission distance: 10 m (avoid the obstacle). Battery capacity: 2000 mAh/3.7 V speaker and microphone: 500 mA. Charging specifications: DC5V-1A type C (does not support fast charging). Charging time: about 3-4 hours Working time: do not turn on the light: 3-4 hours Turn on the light: 2-3 hours Standby time: 12 hours Package includes: 1 audio. 2 microphones 1power cable 1 instruction manual (Spanish language not ).? ?Great Gifts?With our mini karaoke microphone, everywhere is the stage. You can karaoke alone for joy or let your kids,family, friend start their live show. It is a great birthday or festival gifts foryour kids, friends or family. Better choice gifts for all kinds of the festival (Easter, Christmas, Valentine,Halloween, Thanksgiving, New Year).". Portable & Long Time Use?No matter where you go, our small portable wireless karaoke microphone and speaker will go to the party with you. Built-in 2000 mAh rechargeable battery ensures 3-4 hours of fun. Enjoy non-stop fun. Birthday parties, outdoor events, travel...This portable wireless speaker and microphone will meet all your "fun singing" needs. Connect Anywhere?Pair the karaoke machine with any Bluetooth-enabled device, or play music from a TF card or USB drive. With a stable signal transmission range of 10m/32.8ft, it is suitable for all your favorite devices, such as iPhone, Android phone, iPad, tablet, PC and so on. You will never miss a happy moment.(NOTE: Microphones that are too close can produce screeching and strange sounds, which is relatively common audio feedback, so try to keep the microphone away from the speaker.). Fun Voice Change & Multi-Colored LED Lights ?Professional audio processor and tuning system create an amazing KTV live sound environment and wonderful echo reverberation. Using the 4 different effects to change your voice and provides more fun for your kids (including Original, Female voice, Male voice, Monster voice). LED lights dancing with the rhythm of the music, creating a fun atmosphere. " 2 Wireless Microphones?Our karaoke machine comes with 2 wireless microphones that use advanced active noise reduction technology, a professional DSP audio processor to auto adjust treble and bass. Every word from you will be perfect! Can be used as microphone, karaoke machine, high quality speaker, voice changer, . A convenient, multi-functional microphone toy that can bring kids fun anywhere, anytime.