Rolex Datejust 31 178240-0037 Blue 31 MM
The Rolex Datejust 31 reference 178240-0037 is specified with a 31 MM case, blue dial, and sapphire crystal crystal. The listed automatic movement uses caliber 2235 and has an approximate 60 hours. The jubilee configuration follows the source specifications.
The source lists testing at 3 ATM / 30 meters; swimming is not recommended.
Specifications
Brand: Rolex
Collection: Datejust 31
Model No.: 178240-0037
Case Size: 31 MM
Dial Color: Blue
Dial: Blue
Color: Silver
Mechanism: Japanese, Swiss
Movement: Automatic
Caliber: 2235
Power Reserve: 60 hours (Approximately)
Case Material: 904L stainless steel
Bezel Material: 904L Stainless Steel
Crystal: Sapphire crystal
Bracelet Material: 904L Stainless Steel
Bracelet Type: Jubilee
Clasp Type: Fold clasp
Functions: Hours, Minutes, Seconds, Date, Chronometer
Water Resistance: Tested at 3 ATM / 30 meters. Swimming is not recommended.

