Seiko Cal. 5610 - 637

The Seiko 5610-637 represents an important milestone in Seiko's 1984 lineup. It features a Navy dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-e47393f3a946]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1984

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