Seiko Cal. 5277 - 443

The Seiko 5277-443 represents an important milestone in Seiko's 1987 lineup. Powered by the 5277 caliber with 25j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-01fe05f2b44a]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1987

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