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User-friendly, Digital display and Plastic watch casing Product Specifications: Range: Low & 0.15 ~ 1.50 ‰ BAC, HI Auto detect: Flow detect automatically Accuracy: ±0.15 ‰BAC at the Calibrated point (alert level). Power Input: Rechargeable battery Display: Digital display with 0.01‰BAC resolution Tolerance compensation: Pre-alert function together with bi-color backlighting Auto power saving: 2 minutes Breath sampling: about 5 seconds continuous breath sample RTC: Real time Clock in 12/24 hour format Calendar: Year, month, date & day Temp.: Temperature in ℃ and ℉; Max & Min temp. memory Cycle time: about 20 seconds Alert level calibrated: 0.2; 0.5; 0.8‰BAC or 0.02; 0.05; 0.08%BAC or 0.10; 0.25; 0.40 mg/l Agency Approval: CE Accessories: 1 pcs USB cable for charger (charger not included)