Seiko Cal. 5637 - 740

The Seiko 5637-740 represents an important milestone in Seiko's 1996 lineup. It features a White dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-011edf9aef53]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1996

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