Fangrui Product Details 1.description:lydsto Alcohol Tester High Accuracy Portable Breathalyzer For Drunk Drivers Lcd Display / Audible Alarm / Three Unit Switching / Digital Breathing Quick Response Alcohol Detector 2.features: - Mini & & Portable: Small Size, Only 11cm In Length, Easy To Carry. - Easy Operation: Simple One-button Operation, Easy To Manage In A Dark Environment At Night Or When Drunk. - Sound & & Display Prompt: There Will Be A Clear Sound Alarm And A Digital Display Prompt, Convenient For You To Operate And A Result Prompt. - Blowing Type: Air Blowing, Non-contact, Hygienic And High Precision. - High Precision: High Detection Semiconductor Sensor, More Accurate Measurement. 3.specification: Name Of The Item: Lydsto Alcohol Tester Model: Hd-jjcsy01 Color: Black Sensor Type: S Transmitter Sensor Detection Range: 0-0.199 %bac, 0-1.990 & Permit; Bac, 0-0.995mg/l Accuracy: & Moremn; 0. Bac, & Moremn; 0.100 & Permit; Bac, 0.050mg/l Working Environment: 20 & Moremn; 5 Battery: 3 * Aaa Batteries Size: 112 * 61 * 29 Mm Weight: 60 G Package Weight: 140 G 4.attention: 1.please Test After Drinking For At Least 20 Minutes As It Takes About 20 Minutes For Alcohol To Be Absorbed From The Digestive Tract Into The Bloodstream . If Tested Immediately, It Can Only Reflect The Concentration Of Alcohol In The Oral Cavity, Not In The Blood. 2.do Not Directly Use Chemical Or Corrosive Solution To Wipe The Product, So As To Avoid Liquid Flow Into The Trachea. 3.it Is Strictly Prohibited To Use It In A Closed Environment With Corrosive Gases Such As Paint, Pesticides, Alcohol Or Air Pollution. 5.note: * There Is A Little Difference According To Manual Measurement. * The Color Of The Item May Be Showing A Slight Aberration Due To Different Shooting Light And Monitor Display. * Product Warranty Is Only For Customers In China, Foreign Customers Can't Be , Please Understand. 6.package List: 1 * Lydsto Alcohol Tester 5 * Replaceable Nozzle 3 Aaa Batteries 1 * User Manual