What time is it? Watches and horology

spb051 comes in blue as well

Get one of these:

https://www.magrette.com/shop/9062869893?in=370040261

Helson sharkdiver 40, 42 45, in steel depending on your preferences. Quirky but nice.

Precista PRS-3 from Timefactors? £340

Vintage? I think this Yema is boss, in fact there’s so much cool French stuff I keep coming across from the sixties and seventies.
Edit: on closer inspection the watch I’ve linked to is possibly a redialled bitsa but you get the drift.

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F202710784592

Squale 20 Atmos?

http://www.gnomonwatches.com/watches/squale-watches/20-atmos-classic-ceramic-1545-sel-bracelet

You can get variants that don’t use the exact Rolex-style Mercedes hand, eg:

http://www.gnomonwatches.com/watches/squale-watches/20-atmos-militaire-ceramic-1545-sel-bracelet

50 Atmos is a more classic Squale design if you can stretch to it - really nice case etc.

Or a Seiko Turtle (eg SRP777). Only some references come on a bracelet, eg SRPC23.

http://www.gnomonwatches.com/watches/seiko-watches/prospex-turtle-200m-automatic-anthracite-ref-srpc23j1

Plenty of black dial Seikos with a tool vibe, eg the Samurai:

http://www.gnomonwatches.com/watches/seiko-watches/prospex-samurai-200m-automatic-black-ref-srpb51j1

And the turtle mini:

http://www.gnomonwatches.com/watches/seiko-watches/prospex-turtle-mini-200m-automatic-black-bracelet-ref-srpc35j1

I'm looking for a nice automatic diver with a steel bracelet for maximum 500 pounds

It's not auto but its a proper certified diver - no idea what local pricing would be:
https://www.starbuy.com.au/citizen-eco-drive-mens-200m-black-divers-watch-bn0190-82e

There's also a Ti version.

Otherwise I really rate these ( a bit more utilitarian though)
https://www.starbuy.com.au/seiko-prospex-automatic-steel-divers-mens-watch-srpb53k