Seiko Cal. 6687 - 377

Released in 1968, the Cal. 6687 with design code 377 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-c7fa9cb78ef9]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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