How to Use: 1. Press the button for 1 second to turn it on, the backlight and the display will light up at the same time, display all the content and a "beep" prompt to turn on. 2. The display shows "Warm up" and a 10 second countdown. After the countdown is over, a "beep" will sound, indicating that it will enter the following stage at the same time. 3. The display shows "Blow" and a 10 second countdown. Blow to the blowing place for 3 to 5 seconds. After the countdown is over, a "beep" sound will prompt you to enter the result display. The test result is displayed in two units of %BAC and g/l. . Specification: Item Type: Alcohol Tester Material: ABS Voltage: 5V Current: 1A Battery: Lithium Battery 200mAh (included) Response Time: =20S Range: 0 to 0.19% BAC; 0 to 1.9g/l Error: ±0.01% BAC Operating Temperature Range: -5? to 45? Storage Temperature Range: -20? to 50? Blow Time: 5 Seconds Weight: Approx. 78g / 2.8oz Package List: 1 x Alcohol Tester 1 x User Manual 1 x USB Power Cable Note: Shipped with Built in Battery



Best Sellers Rank: See Top 100 in Health & Household. : B0B15MWJYQ. Date First Available: May 12, 2022. Package Dimensions: 7.09 x 3.15 x 1.57 inches; 2.75 Ounces. Best Sellers Rank: #281,750 in Health & Household. Date First Available: ?May 12, 2022. : ?B0B15MWJYQ. Item Weight: ?2.75 ounces. Package Dimensions: ?7.09 x 3.15 x 1.57 inches.