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: In order to make the test results accurate, please test after 20 minutes of drinking, and the test time is preferably more than 3 minutes from the last test. Do not directly wipe the product with chemicals or corrosive solvents, in order to avoid liquid from flowing into the air pipe. This machine will not work normally when there is high concentration of interference gas. If the test is performed under low power, the test value will have a certain deviation from the real value. Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: (Battery Not Included) 1 x Alcohol Tester 5 x Mouthpieces