Seiko Cal. 5646 - 877

The 5646-877 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-dd3185b6fd2b]

Also known as: Crown, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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