Tudor Black Bay 31 white gold Grand Seiko’s unique caliber that

Grand Seiko’s unique caliber that combines the motive force of a mainspring with the high precision of a quartz watch

adding a touch of sophistication

Diameter 42

SBGE257 is one of three new Spring Drive GMT Sport models in a smaller 40

ring celebrates everyday joie de vivre

Tudor Black Bay 31 white gold Grand Seiko’s unique caliber thatRoyal Jewelers is an authorized Tudor dealer in the Boston area and offers the Tudor Black Bay 31 with Tudor's 5 year warranty. Five year Guarantee Five year transferable guarantee with no registration or periodic maintenance checks required Case 31mm stainless steel case with polished and satin finish Movement Manufacture Calibre MT5201 (COSC) Self winding mechanical movement with bidirectional rotor system Integrated construction Power Reserve Power