I purchased a unit with external valve stem sensors and a display module that mounts in a cigarette lighter socket. I didn't want the added complication of internal sensors, rebalancing the tires, having to remove a tire to change a battery, etc. I bought it with the intention of using it on the Pantera, but just to try it out, I put it on my Subaru. It worked well, so I bought another for the Pantera. My only minor complaints are no dimming ability for the display at night, and the "manual" is a tiny sheet of paper written in Chinglish. I am satisfied with the performance; works as advertised.
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