Seiko Cal. 6311 - 521

The Seiko 6311-521 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-022b8baf315d]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1991

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