The Ecoblast foghorn is the foghorn that never runs out. Not only is it louder than most of its competitors, it's also powered entirely by compressed air, and therefore never needs to be refilled. Incredibly cost effective and environmentally friendly, this foghorn can be recharged by using the hand pump provided, or by a tyre inflation compressor. 8" tall, horn length 6.5".
Approximately 80 short blasts per full charge.