Seiko Cal. 6388 - 311

This Hand-Winding model from 1998 features a 37mm PVD Black case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-1e62cb244908]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1998

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