Seiko Cal. 6140 - 377

The Seiko 6140-377 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-e2a744b19912]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1979

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