Bullet Points: 1Portable Tester: High-accuracy Breathalyzer has an intelligent semiconductor sensor that can accurately test your concentration of within 10s. 2Clear LED Screen: The Portable Breath Detector is using the LED screen display. It is very easy to view the measured value with the high-definition display. It will sound an alarm if the measurement value is higher than the standard value. 3Contact-free Tester: Using the Breathalyzer is very simple, you can pre the on/off key to wait for 10 seconds, then blow for 3-10 seconds, and you will see the results. 4USB Charging: The Breath Tester adopts the USB charging design, and there is no need for you to prepare batteries. It is an energy-saving tester with the power display. 5Compact and Pocket: The Profeional Breath Detector is compact and pocketed. It can be easily put into your backpack or pocket so you can use it any time. Description: The Portable Breathalyzer is compact and lightweight. It comes with a non-contact mouth-blowing checking way. It has an HD LED display and is very easy to read even in the dark. It is neceary for drivers. 1. Equipped with semiconductor sensor system, quicker tester. 2. Non-contact testing, healthy and clean. 3. Compact and portable, easy to carry. Properties: Sensor type: Semiconductor type sensor Display: LED display Shell material: ABS Test range: 0.00-0.19%BAC(0-0.95mg/l) Measurement unit: mg/l(BrAC), m/l(BAC), %BAC, mg/100ml Measurement mode: fast exclusion, automatic detection Measurement time: 10 seconds Power supply: built-in rechargeable polymer lithium battery Battery used: 3.7V 150mAh Power adapter requirement: DC5V 1A Operating temperature: 0-45 Warm-up time: 10 seconds Blowing time: within 10 seconds, requires more than 4 seconds Packing List: 1*Testing instrument (Japanese interface) 1*Data cable 1*Manual (Japanese and English)