Ketone Breath Testing is a far more accurate method than urine strips testing, also more convenient for testing, you only need to breathe with the digital ketone breathalyzerBreath Ketone Meter save you from finger pricks, and the device can be used several thousands times repeatedly, comparatively speaking, you can save much than testing stripsPortable Ketone breath tester designed to carry around anywhere in your pocket, and make sure you are in ketosis all the time; the ketone breath meter with 3 LED indications: Green Light (Ketosis Reading Successfully), Amber Light (Low Battery), Red Light (Ketosis Reading Unsuccessfully)The ketone breath monitor is easy to use, 1-button operation to get the ketone readings: Reading of 0.0 signify you are still not in ketosis state, while the readings between 0.5 and 3.0, signify you are in full state of ketosis, which is the optimal ketone zone; more reading details can be checked in the detailed description page