Seiko Cal. 5616 - 657

The Seiko 5616-657 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-bd9e487e6d98]

Also known as: Tuna, UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1983

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