It is a hand size and portable alcohol tester.

Features:
LCD screen display
Breath alcohol concentration testing
Quick response and resume capacity
Threaded by strap in order to be more convenient carrying
Auto power off for saving batery

Function:
Alcohol test
Press the "POWER" button once, the sceen will display 10 or 15 seconds count down indicating the tester enters into
"warm up" mode.When the "blow" symbol displayed and 10 seconds count down started, indicating the tester is
ready to test.Exhale pneuma into breath inhaler for 3-5 seconds, then read the result from the alcohol tester LCD.
The "Caution" symbol will be displayed if the alcohol concentration is the level between 0.02%-0.05% BAC or 0.1mg/L-0.25mg/L BRAC
The "Danger" symbol will be displayed if the alcohol concentration is the level over 0.05% BAC

Specification:
Alcohol test range:0-0.19%BAC
Accuracy: 0.01%BAC
Warm up time: 10-15s
Response time: <5s
Power supply: 2 x 1.5V batteries(not including)
Color: white
Dimension: 96*37*13mm
Unit gross weight: 38g