Seiko Cal. 6643 - 429

The 6643-429 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-a006191bd80f]

Also known as: UFO, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1973

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