I couldn't agree more. My first boss gave me the HP-12C as a year end gift back in 1985. I still use it once a week or so or anytime I need to do a bond calcula

I couldn't agree more. My first boss gave me the HP-12C as a year end gift back in 1985. I still use it once a week or so or anytime I need to do a bond calculation. I'm still on the original battery, kid you not! I love the feel of the keys.