Seiko Cal. 4436 - 100

The 4436-100 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-7f500b5f90be]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1988

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