Seiko Cal. 0764 - 821

The Seiko 0764-821 represents an important milestone in Seiko's 1988 lineup. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-7d14065b6837]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1988

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