PylePro Model : PMP42BT Bluetooth Megaphone Bullhorn with USB/SD Bluetooth Megaphone - PA Megaphone Speaker with Wired Microphone, Siren Alarm Mode, MP3/USB/SD Readers Features: High-Powered Digital Megaphone Compact Portable PA Speaker Wired Handheld Microphone for Voice Projection Integrated Siren Alarm Button Built-in Bluetooth for Wireless Music Streaming MP3 Digital Audio File Playback SD Card USB Flash Memory Readers Aux-Input (3.5mm) Jack Connect Stream Audio from External Devices Adjustable Volume Control Ergonomic, Light-Weight Pistol Grip Chassis Perfect for Crowd Control Public Gatherings Used by U.S. Armed Forces For Indoor/Outdoor Use Bluetooth Connectivity: Simple Setup Hassle-Free Pairing Works with All of Today?s Latest Devices (iPhone, Android, Smartphone, iPad, Tablet, Laptop, etc.) Bluetooth Version: 2.1+EDR Wireless Range: 30?+ ft. Technical Specs: Power Output: 40 Watt MAX Sound Projection Range: Up to 1200 Yards Battery Operated: Requires (6) x ''D'' Batteries, Not Included Dimensions: Diameter 8.0'' x Length 13.1'' -inches Enjoy compact, portable and powerful sound projection with the Pyle Bluetooth Megaphone. Built-in Bluetooth receiver allows for wireless music streaming and gives you the ability to project audio files from all of today?s latest devices. Setup is simple and connection is hassle-free with the soft-touch digital control panel. High-powered PA speaker projection lets you control the crowd from a distance with up to a 1,200 yard range. Connect and stream MP3 digital audio files with the SD Card and USB Flash Memory Readers -- or directly connect your device via the Aux (3.5mm) Input. Use the wired microphone to project your voice loud and clear, or press the button to activate a continuous siren alarm for emergency use. The Pyle Bluetooth Megaphone Speaker features versatile audio streaming ability for any crowd control or public gathering events.