
The Oris Divers Sixty‑Five 12h Calibre 400 (ref. 01-400-7772-4054-07-8-20-18) is an automatic diver watch, with a 40mm stainless steel case, powered by the CALIBRE 400 movement and a 120 hours-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal, with date complications. Manufacturer MSRP is $4,300.
Owners widely praise the Oris Divers Sixty-Five 12h Calibre 400 for its refined finishing, comfortable tapered bracelet, and the Calibre 400 movement's 5-day power reserve, 10-year warranty, and 10-year service interval. The 12-hour bezel is noted as useful for travel, and the domed sapphire crystal creates appealing light play. Accuracy is reported as precise, with one owner seeing +1.6 seconds per day. However, some find the watch bland and overpriced at $3900, questioning its dive watch credentials with 100m water resistance. One owner reported issues with the date wheel and accuracy after a month, and the date window's black fill is noted as not perfectly matching the matte dial. Overall, owners rate the Oris Divers Sixty-Five 12h Calibre 400 highly for its movement upgrades and elegant, wearable design.