How many blast from one canister?

Maybe one -- this thing is worthless! did not work for me - a couple of blasts but inconsistent and then did not work at all. Do not buy

The horn is 120db and is very loud. Hope that helps and thank you so much for your interest in Better Boat.

What is the purpose of the screwable cap on the opposite side of the horn for?

This is used during production to assemble the portion that makes the noise within the horn. You don't need to open it or adjust anything with it. Hope that helps and thanks so much for your interest in our Air Horn. It means a lot to us here at Better Boat.

Is there an expiration date? How long does the air last before you have to buy another one?

Not a date on the container. This thing was basically worthless. Blasts intermittently, most of the time does not work. Save your money do not buy this thing. I give it a zero rating.

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Air Horn for Boating Safety Canned Boat Accessories | Marine Grade Airhorn Can and Blow Horn - 3.5oz

Air Horn for Boating Safety Canned Boat Accessories | Marine Grade Airhorn Can and Blow Horn - 3.5oz

Product ID: 374266033

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Details

Brand
Better Boat
Colour
3.5 oz With
Style
Safety
Noise Level
115 dB
Manufacturer
Better Boat

🎒Compact 222g portable size

📢115 dB loud blast

🛥️USCG approved for boats ≤65ft

Description

📢 Be heard, be safe — the power of a half-mile blast in your pocket!

MADE IN THE USA - Crafted under rigorous quality controls, supporting American manufacturing and superior reliability.
UNMATCHED LOUDNESS - 115 dB sound blast cuts through any emergency noise, ensuring you're heard from half a mile away.
COAST GUARD CERTIFIED - Meets strict U.S. Coast Guard standards for boats up to 65 feet—safety you can trust on the water.
ULTRA PORTABLE DESIGN - Compact and lightweight at just 222 grams, fits effortlessly in your pocket, kayak, or backpack.
VERSATILE SAFETY TOOL - Perfect for boating, hiking, jogging, camping, or any outdoor adventure where safety matters.

Better Boat’s 3.5oz Marine Grade Air Horn delivers a powerful 115 dB blast audible up to half a mile, meeting U.S. Coast Guard requirements for boats up to 65 feet. Compact and lightweight at 222 grams, it’s designed for easy portability on boats, kayaks, or outdoor gear. Proudly made in the USA with strict quality standards, this air horn is an essential safety accessory for any professional millennial adventurer who values reliability and peace of mind.

Specifications

Brand	Better Boat
Colour	3.5 oz With Horn
Style	Safety
Noise Level	115 dB
Manufacturer	Better Boat
UPC	853910007801
Model	Air Horn
Package Dimensions	22.1 x 13.11 x 5.41 cm; 222 g
Item model number	BB-AIR-35OZ
Exterior	Painted
Manufacturer Part Number	853910007801
Volume	103.5 Millilitres
Assembly Required	Yes
Item Weight	222 g

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