Sleek, ergonomic design; 17-channel selectable, 72-76 MHz; Digitally synthesized frequencies | 1.25" OLED interface displays (master & aux volume level, mic mute, settings lock, battery level), Easy-to-use menu-access controls | MIC input accepts electret mic with 3.5 mm mono plug, AUX audio input accepts 2.5 mm stereo plug (i.e for MP3 or CD player) | Range of up to 150' (with PPA R37 receiver), Belt clip for hands-free operation, Made in the USA | Includes: (1) PPA T46 Transmitter, (1) BAT 001-2 (2) AA Batteries, (1) CLP 023 Belt Clip and (1) WCA 087 Auxiliary Input Cable