Keychain Breathalizer

A keychain breathalyzer is a small, portable device that measures the alcohol content in a person's breath. It is about the size of a keychain and can be easily carried in a pocket or purse. To use a keychain breathalyzer, the user blows into the device, which then displays the blood alcohol content (BAC) on a small screen. Keychain breathalyzers are often used as a tool to help people make informed decisions about whether or not it is safe to drive after drinking alcohol. It is important to note that the accuracy of keychain breathalyzers can vary, and they should not be relied upon as a definitive measure of a person's BAC.