Five days of reserve, and that's the bit I'd pay for
By Tom Hargreaves, Falmouth, Cornwall ·
120 hours. That's what the calibre 1315 gives you, with its three barrels, and for someone who takes a watch off on Friday and doesn't touch it again until the Wednesday after a long weekend of teaching, that's genuinely useful.
The Bathyscaphe is the Fifty Fathoms with the volume turned down. 43 mm across, 13.4 mm thick, 23 mm lugs, which is an awkward width if you're like me and own a drawer full of 22 mm straps. The fabric strap it comes on is fine. It'll smell of neoprene within a month like everything else I own.
My complaint is the open caseback on a 300 m diver. I know, I know, nobody's actually going to 300 metres. But I'd swap the display window for a solid back and a hundred quid off without thinking.
At $11,800 to $12,800 it's a lot. It's also the most sensible Blancpain they make.