YS-69 magic bluetooth microphone is perfect for music lovers to sing and record voices anywhere. It has three times handle function for noise reduction. More effective for highlighting beautiful speech. Works on smartphones or tablets with all free applications such as Smule, Yokee, and StarMaker. It also supports various audio players, reverb, adjustable volume and channel switching features, and a strong echo function, supporting music channel switching with an incredible KTV live feeling. 100Hz to 10KHz frequency range, 115dB 1KHz maximum SPL, 5V DC charging power. Bluetooth has a memory feature that is attached automatically when a cell phone is restarted. The microphone is popular for in-car traveling / BBQ / family dinners and outdoor party so on.