Features:Rapid detect results， quick response and high accuracy.Two kinds of unit conversion， detection range: 0.00-0.19% BAC / 0.0-1.9 g/L.Light weight and easy operation.Low power consumption， auto power-off， long span life.Built-in mouthpiece， it can be replaced.Powered by 2*AAA battery (not included).Specification:Type Alcohol TesterMaterial PlasticQuantity 1 pcsItem Color GreySensor Advanced semiconductor oxide alcohol sensorScreen LCD screenDetection Range 0.00-0.19% BAC / 0.0-1.9 g/LWarm-up Time 10sRespond Time <5sOperating Environment -10~50 CelsiusPower Input 2*AAA battery (not included)Size 5*11*2.6cm / 2*4.3*1"Net Weight 0.05kg / 1.7ozPackage:1*Alcohol Tester1*User manual4*Mouthpiece