Seiko Cal. 6643 - 313

The 6643-313 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-6b0bd6ce14a8]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1965

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