Specifications: Quick response, stable performance. Battery saved design, low voltage indication. Portable and lightweight, easy to carry. Built-in high-sensitivity sensor, the data is more accurate. Item Name: Alcohol Tester Material: ABS Detection Range: 0.000 - 0.199%BAC, 0.000 - 1.990&permil;BAC, 0.000 - 0.995mg/L (BrAC) Alarming Threshold: 0.050%BAC, 0.500&permil;BAC, 0.25mg/L (BrAC) Test Accuracy: &plusmn;0.010%BAC, &plusmn;0.010&permil;BAC, &plusmn;0.05mg/L Reaction Time: < 5s Warm-up Time: 10s Blow Time: within 10s Battery: 2 x AAA Battery (Not Included) Environmental Temperature: 5 to 40 Degree Celsius Features: Digital Display, Portable, Handheld Size: 7.7cm x 5.6cm x 1.4cm/3.03" x 2.20" x 0.55" (Approx.) Notes: 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