Product DescriptionQuickly estimate your blood alcohol content with the small and affordable BACtrack Keychain Breathalyzer. The folding mouthpiece pulls out for testing and slides back down during storage - accurate results in just 5 seconds. Available in 4 different colors! Product Features Accurate BAC Results - Proprietary Advanced MicroCheck Sensor technology delivers reliable, accurate BAC results you can trust. Ultra-Compact Design - Fits inside a purse or pocket and can be easily used as a keychain. Optimal Breath Capture - The innovative fold-out mouthpiece ensures only your breath goes into the breathalyzer, while other airborne pollutants are kept out. One Touch Operation - Simply power on your BACtrack Keychain and begin testing in seconds. LED Display - BAC results are displayed on a bright, easy-to-read LED display. Free Shipping!