Panerai expanded its Submersible range this year at Watches and Wonders, and we love the deep Blu Profondo model the best. Blue seems natural for any dive watch, but the proportions of this watch are spot-on too.

What we love about this model is the simplicity of its design; it is functional with bold markers, big hands, lots of lume and 300m depth resistance. But the blue woven strap, the dash of blue on the winding crown, these are the little details that set it apart.

Is it worth nine grand? We say not quite. There are better dive watches, with helium valves and 500-600m resistance for half the cash. There are square case watches that have the same boxy visual appeal, the TAG Monaco being the most famous example, Bell+Ross offering some alternatives too.

But it has got that Panerai name and let’s be honest, that adds a little something more than a TAG. Here’s the word from Panerai, who have a woke lecture to deliver;

Panerai is committed to developing strategies for a sustainable future, including reducing waste and promoting reuse of materials.

Its 44mm case, caseback, Safety Lock crown protection device and the ceramic anti-clockwise rotating bezel with graduated scale are made of eSteel™, recognizing the critical importance of sustainability goals: 72g of the watch is made of recycled materials, corresponding to 52% of the total weight of the watch (that is 137g).

The dial and bezel of the 44mm Submersible QuarantaQuattro eSteel™ match in color with a blu polished gradient. The watch features the P.900, an automatic caliber that is only 4.2mm thick and supports a date indication and three-day power reserve.

Its functions include hours, minutes, small seconds, date and calculation of immersion time. The Submersible QuarantaQuattro eSteel™ is water-resistant to 30 bar (approximately 300 meters).

Two straps are included with the watch, both in the same color as their companion dial: the first strap is composed of fabric made of recycled PET, while the second strap is made from recycled rubber.