Specifications:Product name: Wireless Microphone HIFI speakerModel: 669Output power: 5WCharging Power: DC5VMax sound Pressure level: >115DB 1KHZ TDH< 1%Frequency range: 100Hz-10KHZReverberation mode: Sound effect reverberationConnection distance: within 10 metersConnection method: bluetooth, TF card, AUXPickup: electret capacitorNumber of speakers: 2Speaker power: 4 13WSpeaker type: 52mm 40 magnetic speakerPower supply: Built-in 18650 Li-batteryBattery capacity: 2600mAhUse time: 6-10hAdvantages: Karaoke professional reverberation effect, with colored lights, High-density noise reduction, professional DSP audio processor and EQ chip design Package Included:1 x bluetooth Microphone1 x USB Charging Cable1 x User ManualFeatures:-- Premium Sound Quality Singing Microphone: Professional audio processor and tuning system, and it has 3-layer filter to avoid crackling or popping, creating a stunning KTV live-sound environment and wonderful reverberation.-- 3 in1 Karaoke bluetooth Microphone: It be used as bluetooth speaker, a player and a recorder. faster paring and universal compatibility. -- 3-way Connection, bluetooth Connection, Cable USB Connection, and TF card Connection. The bluetooth has a distance of connection(10m), Highly compatible 32GB TF card-- Long Playing Time: This Karaoke Wireless Microphone can last more than 6-10 hours after a fully charge. Whatever at home or outdoors, do not worry about the battery is not enough.-- Bring You More Fun: Equipped with LED lights,7 colorful dynamic breathing lights, adding atmosphere to your singing and parties Professional Microphone, bluetooth Speaker, KTV Singing, Party Singing, Family Singing ,A unique gift for children and adults