bluetooth wireless microphone handheld karaoke mic usb mini home ktv for music professiona speaker player singing recorder

frequency range: 100mhz-10000mhz reverb mode: echo is active reverb power supply: built-in 18650 battery battery capacity: 1800mah bluetooth version: bluetooth 4.0, stable transmission, low power consumption advantage: 1. bluetooth wireless microphone and speaker combo, work at the same time 2. three-layer automatic noise reduction design, restore real sound, karaoke level experience 3. support tf function, plug and play, with power off playback 4. multi-function adjustment panel, rich and varied functions the package includes: 1x microphone 1x charging cable 1x instruction manua