This pool thermometer appears to be very well made of great materials. The remote display paired with the unit in the pool immediately when I inserted the batteries. Batteries do not come with the unit so I had to wait a day to try it out until I could buy the batteries. I have had this in my pool for two-weeks now and no glitches in the performance. The remote reader and the floating unit have nice large numerals, black on a silver background, that are very easy to read. Even at age 72!