Description: - The Loud 'n Clear, is an aerosol powered, hand held signalling alarm for instant emergency communication at the touch of a finger. - The Loud 'n Clear is lightweight & portable and can easily be carried by hand or in a pouch attached to a belt or attached to safety equipment. - The Loud 'n Clear does not sound like other electronic alarms and is very easily identifiable in cases of emergency. Technical Specifications: - 135ml canister up to 80 short blasts in each canister can be heard up to ¼ km in the open under good weather conditions. - Height 20cm. - Shelf life up to 3 years if not used. - Aerosol non-flammable nontoxic environmentally friendly. - Replaceable canisters. What's in the box "LOUD & CLEAR" 135ml Handheld Signalling Alarm Canister