I bought the clock of 2008. Is from the technical point super. Everything clearly visible, very intuitive and has also done a great job in the first year. Then the display was slowly faded. So I sent it to Polar and could pay for repairing 40. Okay, after all, cheaper than buying new. Came back and all was well again. Another year later, the pulse was always displayed incorrectly. This sucks really much and I do not want again to spend money for repairs. Is very unfortunate because the clock was actually exactly what I wanted. As most reviews are good yes, maybe I was just unlucky, well, but for me a bad buy.