Seiko Cal. 5610 - 661

The Seiko 5610-661 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-f62d1bbb706d]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1983

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