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Casio technology is at least twenty years ahead of human technology. E.g. this watch that sets itself using radio all over the world and charges its batteries with solar power.

https://www.casio.co.uk/produc...

For the time, i use this: http://www.casio.co.uk/product...
For my heartrate, i let the nurses hook me upto a monitor when its required
For sleeping well, i use earplugs.
For GPS, i use a Map and compass.
For everything else, i have a PC.

Jokes aside, this is just the 1st wave of possible replacements for phones and tablets.
Give it 2-5 years and the "smartwatch" might just be the only device you need. At the moment, its just an extra peice of tech that is already being replicated by existing tech (phones/tablets).

If you're serious, travel to Hong Kong, Bangkok, or any other major Asian city with a lax view of copyrights.

You'll be able to start a large collection of many different styles for not very much money. And on top of that you will have traveled around and have a story for all of your watches. The story really makes the watch.

Other than that, try a
Casio Waveceptor (note, doesn't work in New England)
Fossil PDA Watch
USB Watch
YES watch
MP3 watch
Sleep Tracker Watch (too bad it is so ugly)

Tokyo Flash
Nike Watches (always something interesting)

Also, consider pocketwatches. They're rare enough that you get immediate oddball points for using one, but they're common enough that you can find interesting ones.

Lil' linky to the site http://www.casio.co.uk/prod/product.asp?ID=933

I think not.

Damn straight. Nearly all of them require you to type in an expression and evaluate it, which makes using them a complete pain.

I have a FX451M. I love it. It's ancient and falling to pieces; the battery went long ago, and the solar panel isn't sufficient to trigger the reset circuitry, so every time I need to use it I have to get it out of base 14.5 or whatever the confused circuitry has decided to put it in this time, and the hinge is going so that the buttons on the right half of it only work if I press a certain place on the case.

So I want to replace it. I had a look at Casio's current selection. Every single one uses expression evaluation, which makes 'em useless for my purpose. I don't want a pocket computer. I want a calculator.

My FX451 is small, simple, flexible, powerful, and I know it so well that I can think with it. It's got the four bases I commonly use, it's got all the logical operations I commonly use, it's a scientific calculator, it does unit conversions (saving me from remembering how many bloody millimetres there are in an inch this year), it's got a decent set of scientific constants, and everything is two keypresses away. (The FX451 is wallet-shaped, with lots of extra buttons on the right half of the wallet, so it doesn't use the shift key much.) It's so well designed you don't need a manual to work it, and I'd like to see you try that on a modern calculator.

Since I can't replace it, I've been seriously considering reboxing it in another case with, like, real keyswitches. I'd lose the portability but keep the feature set.

So where are the real calculators? Why is it that all you can get are these idiotic semi-programmable user interface nightmares? There has to be a demand for simple, powerful calculators, so why isn't anybody meeting it?