Seiko Cal. 6644 - 857

This Hand-Winding model from 1976 features a 37mm Two-Tone case. It features a Burgundy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-84e3f10793a2]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1976

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