Seiko Cal. 4540 - 676

The Seiko 4540-676 represents an important milestone in Seiko's 1979 lineup. Powered by the 4540 caliber with 31j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-28a063ed9197]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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