1520, which had a frequency of 19,800 vibrations per hour, to Cal. 3000, which had a frequency of 28,800 vibrations per hour, to improve the accuracy and stability of the watch. In addition, the use of sapphire crystal glass increased the water resistance from 200m to 300m, and a unidirectional rotating bezel was adopted to improve the safety of diving.
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BezelStainless steel/aluminum / black. Case：Slight scratches. Size(CM)【Case】. SNew / Unused New item, but may have insignificant scratches or slight discoloration due to storage or display. AExcellent Used item, may have insignificant scratches and signs of usage.
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BezelStainless steel/aluminum / black. Case：A few small scratches、Slight scratches. Size(CM)【Case】. SNew / Unused New item, but may have insignificant scratches or slight discoloration due to storage or display.
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They are made for Rolex Submariner 16800,16610,16233, 16813, 16818 or Sea Dweller 16600, 16660 T Sant Blanc watches which has 20mm lugs and has Sapphire crystal and fits watches with no spring bars holes visible outside the case.
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They are made for Rolex GMT Master 167XX and fits all Gmt watches with sapphire crystal with 20mm lugs. 12-17MM GOLD SPRING BAR FOR ROLEX WATCH MIDSIZE JUNIOR 6827 BAND BRACELET STRAP. 17MM 18MM 19MM 20MM 21MM 22MM 23MM 24MM 26MM.
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