?Optional App Mode?Download "AlcoTest" through the app store. The APP mode can better set the breathalyzer and provide historical record query to avoid multiple tests. ?Breathalyzer Keychain?MINI professional alcohol breathalyzer. Measuring just 2.6*1.85*0.75 inches. Breathalyzer is less than half the size of an iPhone. Breathalyzer's weight 40g, it's easy to hung on the key or car and is very suitable for wallets or pockets. ?Easy to Use?Only one button operation, press for 3 seconds to start testing. Simply insert 1 piece AAA battery (not included), power on your breathalyzer. It's that easy! There are animation tips during the test to avoid boring waiting. ?Faster Test?Turn on 3s, Preheat 5s, Blow 4s. Then your blood alcohol concentration (%BAC) will be shown in oled display. It saves at least 10s than other Breathalyzer. Wait 15 mins after drinking to get the most accurate result. ?Professional Fuel Cell Sensor?Breathalyzer with upgraded fuel cell sensor maintain accuracy over a much longer period of time. This breathalyzer can provide at least 2000 accurate measurements.

Best Sellers Rank: See Top 100 in Health & Household. : B0BFWJBBQC. Manufacturer: Hanwei Electronics Group Corporation. Date First Available: October 22, 2022. Product Dimensions: 2.6 x 1.85 x 0.75 inches; 3.53 Ounces. Is Discontinued By Manufacturer: No.