Warmhoming Yellow Sensitive and high accuracy high accuracy, The at-818 alcohol concentration alcohol tester is used to measure the human body, intelligent MCU control, when the test results more than 0.05% Bac or 0.50  Bac or 0.25 mg/L, or 50 mg/ 100 ml, it warned audio and video, warn you. Five pieces mouthoieces for friendsalcohol breath analyzer come with 5 pieces mouthpieces which are placed on the back of the device, and the mouthpieces can be cleaned and recycled. Will be much easier for your family or friend to test. One touch Operation The breathalyzers are extremely easy to use. Simply insert the three included LR03 AAA batteries, Power on your Breathalyzer and begin testing. You are able to easily change units of measurements and set user-defined Bac thresholds for testing.One touch Operation The breathalyzers are extremely easy to use. Simply insert the three included LR03 AAA batteries, Power on your Breathalyzer and begin testing. You are able to easily change units of measurements and set user-def Perfect LED screen with blue LED display, it will be much easier for night viewing. It will be auto shut off to save power after you finished the test for 20 seconds. Lcd screen flicker shows that it is in low battery. Smart design and size this alcohol screener will fit into almost every Shirt- or pants pocket. You will have the ability to check the alcohol value in your breath E it is also a good companion for breast-feed Mothers who want to know whether they can feed their children or not after Drinking through measuring their Bac (Blood alcohol content). more