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Feature
Up to 40 watts power - tough housing - weight: 2.20 Lbs1000 Yard Range - Built-In Siren
Used By U.S. Army, Schools, And More - Plug In Any External Source With 3.5mm Aux-In Jack - Perfect for iPod/iPhone.Please refer user manual attached below for instructions and troubleshooting steps
(3) Modes: Talk, Siren & Music Aux (3.5mm) Input Connector Jack Stream MP3 & Digital Audio Files Ability to Connect External Devices (iPhone, Android, Smartphone, iPad, Tablet, etc.) Ergonomic Pistol Grip and Lightweight Chassis Projection Range: Up to 1000 Square Yards Battery Powered: Requires 6 x 'D' Batteries, Not Included
Description
Be heard loud and clear with the PMP43IN
Click here for a larger image 
Features talk/music mode and siren mode. 3.5mm aux input lets you play music and recordings from your iPod or other audio device.
Also comes with handheld microphone
Professional Megaphone / Bullhorn w/Siren and Handheld Mic
Be heard up to 1000 feet away with this super-powerful, professional megaphone. Amplify your voice cord-free and with clarity with this lightweight device. This megaphone also includes a siren sound and handheld microphone.
3.5mm AUX Input Lets You Amplify Music and Recordings
You can play music and recordings through the systems powerful amplifier when you plug your iPod or other device into the unit using a 3.5mm double-sided male audio cable.
2 Modes: Talk And Siren
In addition to standard talk mode, the PMP43IN features a built-in siren so you can get everyones attention fast.
Variable Volume Control
Adjust the volume to your preference with the variable volume control.