Portable and convenient to carry on keychain
Easy to use and quick response and resume:
Press and hold the power button, red and yellow LEDs will light"
Just exhale into the vent to get your BAC immediately
In about 20 seconds, the green LED will keep lighting for READY instead of red& yellow LEDs. The unit enters into the testing status.
Colored Light Indicate
Green: under 0.02% BAC
Yellow: over 0.02% BAC
Red: over 0.05% BAC +
Countdown & count-up timer keep the deadline of parking
Requires 2 x AAA 1.5V batteries (not included)
LED flashlight torch function
Before test the LED displays the time like a watch
