Seiko Cal. 5645 - 623

The Seiko 5645-623 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-521e9d0a8c82]

Also known as: Sea Horse, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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