1,700-yard range; Convenient coiled-cord handheld microphone; Button-activated continuous siren alarm tone; Adjustable volume control; Connects & streams audio from external devices via 3.5mm aux input; 3 audio modes: talk, siren & aux; Works with iPod(R), MP3 players, iPhone(R), smartphones, etc.; Ergonomic pistol grip & lightweight chassis; Dim: 9″ dia x 13.8″L; Requires 8 C batteries;