Seiko Cal. 6643 - 351

The 6643-351 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-5e6afb10bbda]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1982

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