Seiko Cal. 4421 - 251

This Quartz model from 1978 features a 44mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-837f30c556ec]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1978

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