Seiko Cal. 5220 - 147

The Seiko 5220-147 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-5f33b10c34f0]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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