Volume Adjustment: It has a volume adjustment function, which can adjust the loudspeaker volume according to the situation. And you can switch between MC mode and KTV mode. Long Lasting: Ultra-long standby, turning off automatically after no input for 15 minutes to save the power consumption. Working for 8 hours. Professional and Best Experience: Built-in DSP chip with the howl rejecting function to reject harsh howl effectively. Made by rear earth material speaker, lightweight, excellent sound, high volume. This 2-in-1 wireless microphone and voice amplifier, the sound can cover about 100m²(about 1000 sq. ft). Bluetooth Wireless: Wireless playing function is more convenient to play without the trouble of a cable connection. Press the M button to switch between speech mode, host mode, karaoke mode, and Bluetooth mode. Speech mode sounds clear and natural, Karaoke mode with reverb sound. It can connect to mobile phones, computers, and PAD via Bluetooth in Karaoke Mode and Bluetooth mode. 2 in 1 High-tech Mic: PLEASE NOTE: · It is not a Bluetooth transmitter microphone, it can't connect speaker; · It can't send the sound to the receiver, TAKSTAR DA10 microphone combining microphone, power amplifier, and speaker together, suitable for speeching, karaoke, etc. Can not connect additional amplifiers or other audio receivers, such as PA system or karaoke system.