The MegaVox 2 is portable public address system ideal for outdoor voice amplification needs, such as directing marching bands or athletes, emergency preparedness, and more. It has a high-efficiency re-entrant horn driver and a 20W amplifier, delivering up to 119 dB of clear sound to crowds of around 1,000 people. Its built-in rechargeable batteries last for up to 8 hours per charge, allowing you to truly take this system wherever you need to go. Alternatively, it is stand mountable, functioning as a more typical sound system.This unit comes with a built-in Bluetooth receiver, an AIR wireless transmitter, and two dual wireless microphone receivers. The transmitter allows the MegaVox 2 to send signal to a compatible speaker with an AIR wireless receiver such as the MEGA2-AIR (sold separately). It offers over 100 frequency channels, but even in the rare instance of signal interference, a 1/4" speaker output is also included to send wired daisy-chained audio. The MegaVox 2 series operates in the same frequency as Anchor Audio's Assistive Listening products, allowing you to create an ADA-compliant sound system with ease!FeaturesReaches crowds of 1,000+119 dB of clear soundConnect up to four wireless microphonesSend wireless signal to companion speakers with Anchor AIRBuilt-in Class 1 BluetoothLithium ion rechargeable batteries; 6-8 hours per chargeSpecificationsRated Power Output: 20W AC/DC RMSMax SPL @ Rated Power: 119 dB @ 1mFrequency Response: 400 Hz to 15 kHz, ± 3 dBMicrophone Wireless Frequency: 1.9 GHz DECTMicrophone Wireless Range: 300'+ line of sightInputs:Line: Hi-Z, unbalanced, 1/4" phoneWired Mics: 2x Lo-Z, unbalanced, 1/4" phoneOutputs:Line (post fader): Lo-Z, 1/4" phoneSpeaker: 4 Ω, unswitched, 1/4" phoneAnchor AIR Specifications:AIR Frequency Range: 902-928 MHzAIR Wireless Range: 300'+ line of sightBattery: One 12V LFP rechargeable battery, 5.0 AHCharger (RC-2): 19 VDC / universal input (100-240 VAC, 50-60 Hz)Dimensions (H x W x D): 14" x 8.5" x 3" (35.6 x 21.6 x 33cm)Weight: 13 lbs (5.9 kg) Anchor MegaVox 2 XU4 Portable PA with Bluetooth, AIR Transmitter and 2 Dual Wireless Receivers.