Seiko Cal. 5643 - 306

This Automatic model from 1975 features a 44mm Titanium case. It features a Silver dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-99ebd94148e1]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1975

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