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Health & Wellness Test Kits

Best Keychain Breathalyzers

Melinda Harris
Written by Melinda Harris
Updated April 2022
Bottom line
Pros
Cons
Best of the Best
BACtrack C6
BACtrack
C6

The best all around keychain breathalyzer that is small, portable, and more accurate than other options.

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Bottom Line

The best all around keychain breathalyzer that is small, portable, and more accurate than other options.

Pros

High-quality sensor works to produce an accurate read time and time again. Breathalyzer syncs up to iPhone and Android phones for detailed information instantly.

Cons

Breathalyzer requires 20 minutes after the last drink for best results.

Best Bang for the Buck
BACtrack Keychain Breathalyzer
BACtrack
Keychain Breathalyzer

The best budget keychain breathalyzer that focuses on accuracy more than fancy features.

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Bottom Line

The best budget keychain breathalyzer that focuses on accuracy more than fancy features.

Pros

Simple design is extremely easy to set up and use. Large number readout is easy to read at night. The breathalyzer works quickly with minimal input. Key ring is solid and strong.

Cons

The battery can drain quickly if used several times in a row.

Homasy Portable Breathalyzer
Homasy
Portable Breathalyzer

One of the most affordable keychain breathalyzer options if you need a quick and simple device.

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Bottom Line

One of the most affordable keychain breathalyzer options if you need a quick and simple device.

Pros

Small form factor makes it easy to fit the breathalyzer in a bag, pocket, or glove compartment. Uses replaceable mouthpieces to keep the device clean and hygienic after use.

Cons

Replaceable mouthpiece is prone to damage if left extended when placed in a pocket or bag.

Vandora Breathalyzer
Vandora
Breathalyzer

A long lasting keychain breathalyzer option that will last after many repeated uses without fail.

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Bottom Line

A long lasting keychain breathalyzer option that will last after many repeated uses without fail.

Pros

Power-saving features keep the battery running longer than most options without the need for additional recharging. Mouthpiece is easy to replace or clean after use.

Cons

Instructions can be difficult to understand when learning to use the device.

BACtrack GO Keychain
BACtrack
GO Keychain

One of the best high-quality alternatives for a keychain breathalyzer with a more affordable price tag.

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Bottom Line

One of the best high-quality alternatives for a keychain breathalyzer with a more affordable price tag.

Pros

Mouthpiece folds in and out for easy storage and use. Sensor filters out other airborne gases for better results. Comes in different colors and styles for personalization.

Cons

Breathalyzer body is easy to damage if left in a pocket with keys attached.

Why trust BestReviews?
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. About BestReviews  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. About BestReviews  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.About BestReviews 
HOW WE TESTED

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Click here for testing insights
First Reviewed
December 18, 2021
36
Models
considered
10
Hours
researched
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The team that worked on this review
Our Top Picks
BACtrack
Best of the Best
BACtrack
C6
Bottom Line
The best all around keychain breathalyzer that is small, portable, and more accurate than other options.
Shop Now
BACtrack
Best Bang for the Buck
BACtrack
Keychain Breathalyzer
Bottom Line
The best budget keychain breathalyzer that focuses on accuracy more than fancy features.
Shop Now
Homasy
Top Pick
Homasy
Portable Breathalyzer
Bottom Line
One of the most affordable keychain breathalyzer options if you need a quick and simple device.
Shop Now
Vandora
Top Pick
Vandora
Breathalyzer
Bottom Line
A long lasting keychain breathalyzer option that will last after many repeated uses without fail.
Shop Now
BACtrack
Top Pick
BACtrack
GO Keychain
Bottom Line
One of the best high-quality alternatives for a keychain breathalyzer with a more affordable price tag.
Shop Now
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