Seiko Cal. 6377 - 870

Released in 1965, the Cal. 6377 with design code 870 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-dd055dc7dd3b]

Also known as: Bullhead, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

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