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Product Specifications: User-friendly: Color LED indication and animation, one-hand operation, compact size Enhanced feature: pre-alert (for tolerance compensation) Product Specifications: Range: Low & 0.2 ~ 1.1-HI ‰BAC Accuracy: ±0.2 ‰BAC at the Calibrated point (alert level). Power Input: 2 X 1.5V AAA Alkaline batteries(Not included) Display: 5-COLOR LED reading indication Tolerance compensation: Pre-alert function when close to Alcohol Limit Auto power off: 2 minutes Breath sampling with auto flow detect: about 6 seconds continuous breath sample Cycle time: about 20 seconds Unit Dimensions: 78 X 55 X 18 mm approx. Weight: 40g (without batteries) Alert level calibrated: 0.2; 0.3; 0.5; 0.8‰BAC Agency Approval: CE Accessories: 3 pcs blowing tubes