Jaeger le Coultre launched two new models this week, the Polaris Mariner and Polaris Memovox. Both feature stunning blue dials and old school diving ability at 300 metres.

The Memovox is the more expensive of the pair, at just under 16K UK RRP. You get a beautiful build quality, unique movement, Super Luminova markings, plus that dazzling see-thru caseback. The movement rotor is a skeleton type, with two cut-out sections, so you can see more detail on the in-house Cal 956AA movement, housed inside a 42mm case. That is arguably the perfect sized case for many watch fans, not too big, not too small.

The lume is a bright, light blue by the way, so Rolex have really started a trend with their pastel shade lume hands and hour markers.

The Polaris Mariner is cheaper at a fraction under ten grand sterling, again with a 42mm case, see-thru caseback and chrono functions. Inside there is the Cal899, 32 jewel movement, running at 28,800vph. The date window sets this one apart and we love the orange arrow at the 12 noon position, plus the orange warning strip of colour on the Rehaut bezel button at 2pm. So if you do go diving, you use this bezel ring to click stop a given number of minutes underwater, including the time taken to decompress as you rise up slowly.

Most buyers won’t go diving with this JLC watch, or the Polaris Memovox  on their wrist and who can blame them? Both are too perfect in all their details, showpiece watches – like  a Rolex Submariner – that says to the world, `Hey, I’ve made it.’

Go diving in a Baltic, Zelos, Seiko Prospex, Draken, Enosken or Oris Sixty-Five instead. Save your JLC for a day at the races or a wedding reception