Seiko Cal. 4433 - 921

This Automatic model from 1970 features a 37mm Two-Tone case. Powered by the 4433 caliber with 21j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-f513ac13aa8e]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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