Seiko Cal. 5277 - 437

The Seiko 5277-437 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-7bc98a7cedbf]

Also known as: Sumo, Bellmatic

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1981

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