Seiko Cal. 6163 - 387

The Seiko 6163-387 represents an important milestone in Seiko's 1981 lineup. Powered by the 6163 caliber with 30j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-0047b03043a4]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1981

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