【Wireless karaoke microphone with bluetooth】: built-in high sensitivity professional dynamic microphone, transmission distance upgrade to 98ft (30m), bluetooth 32ft(10m) ◆signal stability◆no delay◆no radiation◆anti-howling◆anti-jamming ◆constant frequency◆distortion <0.2%◆15 uhf adjustable channels. ◆only applicable to input devices with mic interface, 6.35mm (1/4") or 3.5mm(1/8''), not applicable to aux / line in jack.
【Wireless microphone system with echo/treble/bass】 : The wireless karaoke microphone has echo, treble, bass control button, so you can choose different sound effects according to different songs. This wireless microphone has bluetooth, connect via bluetooth name( bietrun) to play your favorite music.It has 15 channels, you can remove the battery cover, short press CH button to adjust channel to avoid interference. Perfect for karaoke, speech, meeting, conference, indoor or outdoor.
【portable and professional dual dynamic microphone】: plug and play, no extra setting. you can adjust echo, treble, bass, volume or switch channels on the handheld microphone, portable and convenient, eliminating the trouble of carrying the receiving system. comes with handheld wireless karaoke microphone, widely applied to conference,speech, web podcast, yoga instructor, church, get together, family party, opening ceremony, dancing instructor, promotion etc.
【1200mAH battery and display】：the receiver of this wireless microphone built-in 1200 mAH rechargeable lithium-ion batteries, offer about 8 hours working time and fully charged in 3 hours. the microphone does not come with any batteries, we recommend using 2 aa amazon alkaline batteries. And our bluetooth microphone has large led display, you can see the batteries, channels and signal clearly.
【Advanced connection and after sales】: If your microphone has no sound, make sure you have enough power for the microphone and receiver. insert the mic jack, not an aux/line in jack. Bietrun offers 1-year warranty and free replacement service.