Seiko Cal. 6644 - 513

The Seiko 6644-513 represents an important milestone in Seiko's 1985 lineup. It features a Green dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-3c084673ec51]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1985

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