Seiko Cal. 6610 - 681

This Spring Drive model from 1974 features a 34mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-a4eae7f74a42]

Also known as: Bullhead, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

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