Product Specifications: User-friendly: Backlighting LCD graphic interface and animation, one-hand operation Enhanced feature: backlighting LCD, Product Specifications: Range: LO, 0.2 ~ 1.0 ‰BAC, HI Accuracy: 0.2 ‰BAC at the Calibrated point （alert level）. Power Input: 2 X 1.5V AAA Alkaline batteries（Not included） Display: Bi-color backlighting LCD display  Tolerance compensation: Pre-alert function close to Alcohol Limit Auto power off: 2 minutes Breath sampling: about 5 seconds continuous breath sample Cycle time: about 20 seconds Unit Dimensions: 65 X 55 X 20 mm approx. Weight: 45g （without batteries） Alert level calibrated: 0.2; 0.3; 0.5; 0.8‰BAC  Agency Approval: CE Accessories: 3 pcs blowing tubes