Advanced flat surfaced alcohol sens. Quick response. SMD assembling, stable perfmance. Direct testing process LCD indication. Digital LCD display with blue backlight. Ptable fashion design. Audible warning beyond preset limit. Sens fault self checking. Battery saved design,low voltage indication. Digital LCD display. Professional Breathalyzer Tester. Breath Alcohol Tester safety f drivers. Breath Alcohol tester needs mouthpiece. within 10 seconds. Broad range. Auto warning beyond pre-set limit. Wks time. Digital Output. Power saving design. Low battery alert. Instructions included. Five mouthpieces included. (Mouthpiece not necessary--simply blow into f 3-5 seconds) lightweight design--fits into purse pocket . Easy to use. Model: AT6000 Detection Range: 0.00 - 0.20BAC% ; 0.00 - 2.00 g/L; 0.00 - 2.00BAC ; 0.00 - 1.00 mg/L; 0.00 - 200 mg/100mL Alarming : 0.05% BAC; 0.50 g/L; 0.50 BAC; 50 mg/100mL Test Accuracy: 10% F.S Wking Voltage: DC 5V 3xAAA batteries(not included) Wking Current: less than to 120mA Environmental temperature:-10 to 50 Relative Humidity less than to 95% Display: 3 digits LCD display with blue backlight Colour: black Material: plastic Package Contents: 1 Alcohol Tester 10 Mouthpieces Only 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.