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User-friendly:Digital & graphic interface and animation, one-hand operation Product Specifications: Range: Low & 0.2 ~ 1.30 ‰ BAC, HI Accuracy: ±0.2 ‰BAC at the Calibrated point (alert level). Power Input: 3 X 1.5V AAA batteries (Not included) Display: Digital display with 0.1‰BAC resolution Tolerance compensation: Pre-alert function together with bi-color backlighting Auto power off: 2 minutes Breath sampling: about 5 seconds continuous breath sample Cycle time: about 20 seconds Unit Dimensions: 107 X 45 X 25 mm approx. Weight: 50g (without batteries) Alert level calibrated: 0.2; 0.3; 0.5; 0.8‰BAC or 0.02; 0.03; 0.05; 0.08%BAC or 0.10; 0.15; 0.25; 0.40 mg/l Agency Approval: CE Accessories: 3 pcs blowing tubes;