Califone PA25RX Bluetooth Megaphone, 25 Watts Power, 1250 feet Effective Distance, Recording time Up to 10 seconds, Rugged ABS plastic for durability, Shoulder strap clips (strap included) Rugged ABS plastic for durability, Shoulder strap clips (strap included) Detachable microphone, Volume control (on side of mic) Power/Record indicators, Speak/Record/Play buttons First megaphone with built-in 3.5mm aux-input Talk/Siren/Whistle switch