Same case, much better engine
By Tom Hargreaves, Falmouth, Cornwall ยท
Short version: if you're looking at the Aquis, get this one.
The Calibre 400 is Oris's own movement, launched in 2020, with 120 hours of reserve and a lot of silicon and non-magnetic parts. Oris back it with a ten-year warranty and service interval, which tells you they believe in it. That matters more to me than almost any other spec. I hate sending watches away. I've got a dive watch in a box under the stairs that's been waiting three years for me to remember to post it to the service centre.
Case is the same as the regular Aquis: 41.5 mm, 12.7 mm thick, 300 m, closed back, blue dial, steel bracelet. Price is $3,600 to $3,900, so about $1,300 more than the Sellita version.
For that you get five days instead of a day and a half. Leave it on the side for a long weekend and it's still going on Tuesday.
Downsides are the same as the basic Aquis. It's a heavy watch, the bracelet's integrated, and the design is a bit corporate. I'd still have one tomorrow.