Seiko Cal. 0721 - 764

This Spring Drive model from 1991 features a 37mm Hardlex-Coated Steel case. Powered by the 0721 caliber with 24j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-a101cf3af019]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1991

Related Models

• Seiko 7076-826
• Seiko 7168-679
• Seiko 3845-904
• Seiko 6687-459
• Seiko 5221-113
• Seiko 6268-362
• Seiko 7138-996
• Seiko 7140-879
• Seiko 4476-856
• Seiko 0765-762
• Seiko 5675-963
• Seiko 4447-376