TOA / ER-2130W

This shoulder-style megaphone features a whistle sound and a rated output of 30W. It comes with a belt and handle for easy carrying. It also has an external microphone input terminal, an AUX (backup) input terminal, an external power input terminal, and a battery level indicator.

~From the manufacturer's website~
This shoulder-style megaphone with whistle sound has a rated output of 30 W and comes equipped with a belt and handle for easy carrying. It's equipped with an external microphone input terminal, an AUX (backup) input terminal, an external power input terminal, and a battery level indicator. The microphone is antibacterial-treated for hygienic and safe use. It can be mounted on the ST-16A speaker stand (sold separately).

■ Power Supply: 10 R20PU D batteries (15V DC); External Power Supply: 12V battery or 12V DC, 3A DC power supply (2)
■ Rated Output: 30W
■ Maximum Output: 45W (AUX input)
■ Signal Sound: Whistle (1.6-2.4kHz)
■ Battery Life: Voice: Approx. 22 hours, Whistle: Approx. 120 minutes
■ Communication Distance: Approx. 800m, Whistle: Approx. 1km
■ AUX Input Sensitivity: -10dB (1) (300mV) 10kΩ (φ3.5 mini jack (stereo type also supported)) Volume Control Nodes included
■External microphone input: 600Ω unbalanced, φ6.3 phone jack, with volume control
■Diaphragm: Polyimide film (diaphragm, bobbin)
■Antibacterial treatment: Microphone
■Not waterproof
■Operating temperature range: -10°C to +40°C
■Dimensions: φ351mm x 512mm (D)
■3.6kg (excluding batteries)
■Accessories: φ3.5 mini plug (for AUX input) x 1
　　　　　　　External power cord with plug (1m) x 1
　　　　　　　Waterproof cover x 1
■Speaker stand (sold separately): ST-16A