Seiko Cal. 4457 - 320

The Seiko 4457-320 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-67b1779496de]

Also known as: UFO, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1971

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