Seiko Cal. 5645 - 163

The Seiko 5645-163 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-2d1ad5598363]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1970

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