TEANA K068 BLUETOOTH, WIRELESS KARAOKE MICROPHONE WITH SPEAKER >All-in-one pocket karaoke bluetooth, wireless, karaoke microphone with speaker for mobile phones/laptops. Practice singing wherever, whenever, anywhere, anytime. Portable, and easy to operate. >Specifications : >Audio Monitoring:capacitor >Output :10mW(earphone output) > 3W(speaker output) >Frequency Range:100Hz-10KHz >SPL:>115dB 1KHz THD