Seiko Cal. 4540 - 925

The Seiko 4540-925 represents an important milestone in Seiko's 1967 lineup. Powered by the 4540 caliber with 34j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-f19e3f5e743b]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1967

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