1. Bluetooth wireless microphone and speaker combo, work at the same time2. Three-layer automatic noise reduction design, restore real sound, karaoke level experience3. Support TF function, plug and play, with power off playback4. Multi-function adjustment panel, rich and varied functions Parameter:Product material: ABS material + aluminum alloyProduct color: gold, rose gold, black, blue, powderProduct size: height 250mm speaker 70*70*65mm (approx.)Weight: 460g (approx.)Pickup: CapacitiveOutput power: 10mw headphone output 5w speaker outputComfortable charging: DC5VFrequency range: 100mhz-10000mhzMaximum sound pressure level: >115db 1khz THD<1%Reverb mode: echo is active reverbPower supply: built-in 18650 batteryBattery capacity: 1800MahBluetooth version: Bluetooth 4.1, stable transmission, low power consumptionThe package includes:1x microphone1x charging cable1x audio cable1x instruction manual