Advanced flat surfaced alcohol sens. Quick response. SMD assembling, stable perfmance. Direct testing process LCD indication. Digital LCD display with blue backlight. Ptable design. Audible warning beyond preset limit. Sens fault self checking. Battery saved design,low voltage indication. Digital LCD display. Breathalyzer Tester. Breath Alcohol Tester safety f drivers. Breath Alcohol tester needs mouthpiece. Warm up within 10 seconds. Broad range.Auto warning beyond pre-set limit. Wks EVERY time. Digital Output. saving design. Low battery alert. Instructions included. Five mouthpieces included. (Mouthpiece not necessary--simply blow into groves f 3-5 seconds) Compact lightweight design--fits into purse pocket easily. Easy to use.Model: AT6000Detection Range: 0.00 - 0.20BAC% ; 0.00 - 2.00 g or L; 0.00 - 2.00BAC ; 0.00 - 1.00 mg or L; 0.00 - 200 mg or 100mLAlarming Threshold: 0.05% BAC; 0.50 g or L; 0.50 BAC; 50 mg or 100mLTest Accuracy: 10% F.SWking Voltage: DC 5V 3xAAA batteries(not included)Wking Current: less than equal to 120mAEnvironmental temperature:-10 to 50Relative Humidity less than equal to 95%Display: 3 digits LCD display with blue backlightColour: blackMaterial: plasticPackage Contents:1 Alcohol Tester10 MouthpiecesOnly the above package content, other products are not included.Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.