Seiko Cal. 4438 - 366

The Seiko 4438-366 represents an important milestone in Seiko's 1986 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-d4f474c50951]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1986

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