The EcoBlast Sport Air Horn by Fox 40 will receive attention with powerful 120 dB sound can be heard up to one mile away.  Once this air horn runs out, and it will, you can recharge it using air from a bicycle pump or air compressor. Once charged you can get up to 50 half-second blasts per 80 PSI charge.

• The EcoBlast™ Sport rechargeable safety signal air horn can be refilled by any bicycle pump, air compressor or local service station
• Environmentally friendly - 100% ozone safe!
• Powerful 120 dB sound meets National Coast Guard regulations
• Can be heard up to one mile (1.6 km) away
• Up to 50 half-second blasts per 80 psi charge
• Non-corrosive and non-toxic
• For use in all types of weather
• No chemicals