* Using alcohol tester, we can directly confirm the concentration
    of alcohol in the blood as it desplays in the LCD screen.
 * As the most advanced MEMS gas sensor was mounted in this product
    and re-calibration function was equipped, measuring accuracy is high.

Features:
 * Semiconductor sensor inside
 * Warm-up time: within 10 seconds
 * Response time: within 5 seconds
 * Operation temperature: 5-40 centigrade
 * Convenient to carry by keychain
 * Countdown and count-up timer keeps the deadline of your parking
 * 3 test steps with LED indication
 * Test result:
    Safety: under 0.02% BAC
    Caution: 0.02% - 0.05% BAC
    Danger: over 0.05% BAC
 * Battery: 2 x AAA alkaline batteries (not included)
 * Clock: uses 1 x AG13 battery (included)
 * Size: 76 x 35 x 22mm