The difference is the method used for sound production. The eco horn uses hand pump action to generate sound. Minimal assembly required; open the package and attach the horn onto one end of the pump.
The quicker the pump handle is operated, the louder the sound. The eco horn requires no gas to operate and can be used for multiple events. Fun for football matches and school events. An excellent choice for temporary alarms and emergency provision kits. The versatile Hand Pump Eco Horn is at home in any environment.