Seiko Cal. 6387 - 677

Released in 1984, the Cal. 6387 with design code 677 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-ba2534cdc6c9]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1984

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