Specifications: LCD display with LED backlight for easy reading. Quick response, stable performance. Small size, lightweight, easy to carry. Item Name: Alcohol Tester Material: ABS Sensor: High-sensitivity Semiconductor Alcohol Sensor Detection Range: 0.00 - 0.19%BAC (0.1-1.9g/l) Alcohol Content: -0.01 - +0.02%BAC (Alarm Point at 0.05%BAC) Preheating Time: 10s Gassing Time: within 10s Response Time: < 5s Auto Power-off: 10 Seconds after Displaying Results Environmental Temperature: 0 - 45 Degree Celsius Battery: 2 x AAA Battery (Not Included) Features: Digital Display, LED Backlight, Portable Size: 10.8cm x 5cm x 3cm / 4.25" x 1.97" x 1.18" (Approx.) Notes: To ensure accurate test results, wait 20 minutes after drinking before testing. Allow at least 3 minutes between tests. Do not wipe the device with chemicals or corrosive solvents to prevent liquid from entering the air pipe. The device may not function properly in the presence of high concentrations of interfering gases. Low battery power may cause deviation in test results. Due to differences in lighting and screen settings, the item color may vary slightly from the images. Slight dimensional differences may occur due to manual measurement. Package Includes: 1 x Alcohol Tester 5 x Mouthpieces