This miniature 3-channel microphone mixer allows you to add and mix sound from 3 microphone sources simultaneously. The mixer features 3 MONO 3.5mm input jacks and 1 STEREO 3.5mm output jack. Only 3 1/4" x 1/4" x 2 1/8", it weighs 3 ounces, uses no batteries and can be attached to the camcorder or the handstrap. Comes with a STEREO-to-MONO output cable.