The LifeGuard Personal Breathalyzer Takes on all Challengers 
Tom Martino, the well known television troubleshooter, arranged for a comparison test of the LifeGuard personal breathalyzer versus Law Enforcement units and a collection of the popular personal breathalyzers sold in pharmacies, mass retailers and on the internet. You’ll be amazed at just how bad the cheapo breathalyzers are and how closely LifeGuard mirrored the Law Enforcement Breath Tester results.

The LifeGuard on 9 News - More than a Gadget
The LifeGuard Breathalyzer is like No Other
Law Enforcement has used them for years to tell if a driver has been drinking. Now you can own a law-enforcement grade breathalyzer for far less.,0,4879473.story