Seiko Cal. 6685 - 231

The Seiko 6685-231 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-d1a2b39870c3]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1977

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