Seiko Cal. 6377 - 757

Released in 1969, the Cal. 6377 with design code 757 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-e6883ec6ec56]

Also known as: Monster, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1969

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