Seiko Cal. 6644 - 927

The 6644-927 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-61d7bae7f254]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1971

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