Seiko Cal. 6377 - 205

The 6377-205 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6377 caliber with 30j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-f6fc62e7a5d9]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1971

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