WEISRE PGX58 Dual Wireless Microphone Mic System for Karaoke Party KTV etc. 
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<br />Main Highlights:
<br />  Wireless microphone brings you unconstrained happiness
<br />  Using 170 - 790 MHz frequency to avoid the interference
<br />  Using multilevel high frequency narrow band filter, so as to dispel any possible interference signals
<br />  Using special ALC circuit to avoid losing your own sound due to big volume
<br />  With the low consumption components, the life of the battery will be much longer
<br />  With the power indicator circuit in the handheld microphone, so you will know when to replace the battery
<br />  With the decreasing back-put whistle function, it can decrease the whistle efficiently
<br />  Power supply: One microphone is powered by 1 x 9V battery ( included 
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<br />Type: Wireless 
<br />Connection: 1/4 inch 
<br />Polar Pattern: Omni-directional 
<br />Package weight: 1.336 kg 
<br />Package size (L x W x H): 35.000 x 27.500 x 6.000 cm / 13.780 x 10.827 x 2.362 inches 
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<br />Package includes: 
<br />2 x Speaker, 
<br />1 x Receiver, 
<br />1 x 1/4 inch Connecting Cable, 
<br />1 x Power Adapter, 
<br />1 x English User Manual, 
<br />2 x 9V Battery