Seiko Cal. 5285 - 820

The 5285-820 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-d277d53a2cf0]

Also known as: Helmet, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1974

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