Measure your alcohol intake with the lcd screen display alcohol testerr quick response and resume capacity for speedy and accurate resultsr features an easy to read lcd screenr includes a carry strap making it ideal for keys lanyards and handbagsr auto power off feature helps preserve battery functionr gives caution warning if it detects alcohol concentration levels between over 002 and danger symbol over 005r powered by 2 x aaa batters not includedr r buying optio