AmpliVox Mega Hailer - Wirless Headset/Lapel Mic Black. Totally wireless highly intelligible lightweight rechargeable battery powered loudspeaker system for general PA applications in areas that are not equipped with a PA.The horizontally aligned horn broadcasts crystal clear voice announcements and reinforces sound to make it louder to audiences over large wide areas. Built-in Bluetooth module allows you to wirelessly stream sound from any Bluetooth capable device.The system includes an AC power-cord for continuous operation when connected to a standard AC wall-outlet and facilitates charging the included internal sealed lead acid (SLA) batteries. On a full charge the system will operate up to ten hours on its SLA batteries power.During emergencies the battery powered design sets up quickly and allows you to broadcast emergency information even during power outages. What's in the Box Mega Hailer PA System Wired Handheld Dynamic Microphone Detachable Carrying Strap AC Power Adapter / Charger with 6 foot power cor Specifications for AmpliVox Mega Hailer - Mic: Manufacturer: AmpliVox Condition: New Color: Black Battery Type: Sealed Lead Acid Battery Features of AmpliVox Mega Hailer - Mic Power Output: 50 Watt Controls: Separate master volume; separate volume and tone control for auxiliary devices Auxiliary Input/Output: Two 1/8" Jacks for MP3 devices Microphone Inputs: One 1/4" / XLR Combo Jack for wired microphones Batteries: Rechargeable SLA provide 10 hrs of operation. USB Charger: 5V / 1A Sound Dispersion: 60 Horizontal x 40 Vertical Frequency Response: 200 Hz15 kHz Sensitivity (SPL): 124 dB at 1 meter with 1 watt input Impedance: 8 Ohms Mounting Options: Built-in 1.5" (38 mm) Diameter Tripod mount MATERIALS/COLORS: Rotational Molded Weatherproof Polyethylene DIMENSIONS:Horn Size: 6" (152.4 mm) H x 10" (254 mm) W Case Size: 14" (355.6 mm) H x 12.5" (317.5 mm) W x 10" (254 mm) D Package Contents: AmpliVox Mega Hailer - Mic Mega Hailer PA System Wired Handheld Dynamic Microphone Detachable Carrying Strap AmpliVox SW680: Mega Hailer - Wirless Headset/Lapel Mic Black