Automobile Supplies Alcohol Tester Check Alcohol Driving Non-contact Blowing Tester

Features: avoid the breeding of bacteria in the blowpipe type No contact with air blowing, healthier measurement. Power supply mode: USB charging Size: 17 * 8 * 4cm Weight: 81g Tips: if you haven't used it for a long time, start it up and warm up several times to test it! It shows that during the 10s countdown period, blow the gas into the hole and the result will be shown later. Note: test after drinking the wine for 20 minutes. The power remains sufficient and the data is inaccurate when the power is low! Slide down the sliding cover to start the machine. Open it and blow it with your mouth