Reviewed By Donnie P (Port Byron, IL) Reviewed for a 2004 Pontiac Grand Am —7/27/2009 6:34 AM
I bought this unit and one of the cheaper ones. Both work, but this one is well worth the extra $30. It's a lot faster to warm up, and a lot faster to reset. These are great to keep in your car to make sure you haven't had too much to drink, and to take to parties.