What can I say, I've used these for 20 years and I've either lost or burnt out 3 before this and now I just purchased number 4 without a second thought.  The old ones were gold, but this is platinum, but it seems to work the same.  The case is much nicer than those in the past.  It's just a great financial calculator.  If you are a newbie to these calculators, you should find the instruction manual.  Previously, it came with the calculator, now I suppose you download it or buy it separately.  It is worth investing the time to learn how to use them, they do a lot more than add and subtract!