The Nady WHT-15 is a wireless handheld microphone transmitter for the Nady Encore II HT receiver (receiver not included). The microphone operates on one 9 volt battery (not included) that is neatly concealed in the base of the microphone. The microphone has a soft, rubberized non-slip covering and a wire mesh screen. Also includes an integrated on/off switch with a power-on LED indicator. Dimensions: 9.25" x 1.875" x 1.875"; Weight: 6.25 ounces (without battery).