This blue Bluetooth karaoke microphone made of aluminum alloy is a wireless dynamic microphone with a built-in speaker. The high-quality Bluetooth module allows it to be used as a speaker, playback, and recording device. It is compatible with various karaoke apps. The microphone features a 2-way connection that supports both Bluetooth and wired connections. To use it, the phone must be connected to the microphone via cable or Bluetooth, and the desired karaoke app must be opened. It can connect with all common smartphones. The microphone supports microSD cards with a maximum size of 64 GB (not included) and has a song switch. The Bluetooth range is up to 10 meters. For noise reduction, the microphone is equipped with a 3-layer filter net. The multifunction buttons allow for adjusting music, echo, and volume. Thanks to the 2600 mAh lithium-ion battery, it can operate for five to ten hours on a single charge. The charging time is about two hours, and the microphone's audio sensitivity is 115 dB. The dimensions of the microphone are 28 x 10.8 x 9.8 cm.