... breath Alcohol Tester with Keychain & Digital Display PFT68S: 1,with key chains 2,with mouthpiece 3,logo print Portalbe breath Alcohol Tester with Keychain & Digital ... and hold the power button ,red and yeloow LEDS with light Just exhale into the vent to get your BAC ... immediately Easy to use design with one touch operaionBright red led flashlight Keychain for conventience ...