Seiko Cal. 6380 - 740

The Seiko 6380-740 represents an important milestone in Seiko's 1978 lineup. Powered by the 6380 caliber with 31j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-a7a0ddd2bf10]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1978

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