Feature 1、High accuracy, specially designed for detecting the wine content of human breath, very practical. 2、It adopts advanced namo semiconductor wine sensor, which has good sensitivity and excellent repetitive function and a variety of applicable capabilities. 3、Backlit LCD screen, digital character display, and it is clear, straight for you to see. 4、When the wine content in the tested breath exceeds the preset value, the device will send out an alarm signal to remind you to pay attention to safety. 5、Compact and portable design, only 15x5.5x2.5cm/5.9x2.2x1in of size, easy to use, no complicated operation.Item Type: BreathalyzerColor: BlackMaterial: ABSSize: Approx. 15x5.5x2.5cm/5.9x2.2x1in(Please allow 1‑2mm difference due to manual measurement.)Sensor Type: Nano semiconductor wine sensorWorking Power: DC4.5V (3pcs AAA batteries, not included)Use Environment:Temperature: -10-50°CRelative Humidity: Less than 95%, no frostAlarm Mode: Blue backlit 3-digit LCD data comparison photo displayExhaled Blood Wine Concentration (BAC):Driving: 20mg/100ml, 0.0909mg/LDrunk Driving: 80mg/100ml, 0.3636mg/L .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Breathalyzer10 x Exhale Mouth1 x ManualNotePlease allow 1‑2mm difference due to manual measurement.