● Easy to use: Simply press the power button for 1 second to start the breath odor tester. Insert two AAA batteries (sold separately), turn on the odor detector, wait for 10 seconds (countdown), and then blow into it for 5 seconds to get accurate results displayed on the screen. ● This breath analyzer is small and portable. It weighs 30g and measures 32 x 105 x 18 (mm). It easily fits in your bag or pocket when traveling or on business trips. ● This breath checker is powered by 2 AAA batteries (sold separately). To conserve power, it automatically turns off 5 seconds after the test is completed. ⭐Free Shipping⭐ Please check the actual product photos for the condition. #See all of Mu-ko's products here ✨☜ ※If there is a problem, please contact us before 《rating the product》. We cannot respond after the rating is given. ⚠️As stated in my profile, We are closed for shipping on weekends and holidays! Breath odor meter, odor detector, breath odor monitor tool, breath analyzer, breath checker, breath checker, bad breath check, 5-level display, breath monitor tool, easy bad breath check at home 7-17 0044⑤