MGROLX Portable Megaphone Spearker/Bullhorn-with Built-in Siren/Alarm-Music-30 Watt Power & 800 Yard Range-Sliding Volume Adjustment-Powerful and Lightweight-ER46S black-white 10.24x6.3x6.3 electronics3 and install the holder

and install the holder

Support for ISO 11784/11785

This pH product is specially designed for pH range of sea water (around 7

±3% or 3℃ (≥212℉

no toxic substances are released to ensure your safety

MGROLX Portable Megaphone Spearker/Bullhorn-with Built-in Siren/Alarm-Music-30 Watt Power & 800 Yard Range-Sliding Volume Adjustment-Powerful and Lightweight-ER46S black-white 10.24x6.3x6.3 electronics3 and install the holderPortable Megaphone Spearker Bullhorn with Built in Siren Alarm Music 30 Watt Power & 800 Yard Range Sliding Volume Adjustment Powerful and Lightweight ER46S Product Features POWERFUL: This portable bullhorn delivers 30 watts of power and is powerful enough to carry sound as far as 800 yards. It is battery operated and requires (4) x D batteries. It also has a volume control to adjust the volume so that it can be used in a variety of scenarios