Seiko Cal. 5658 - 510

This Spring Drive model from 1981 features a 35mm Two-Tone case. Powered by the 5658 caliber with 31j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-ae364dd98d1f]

Also known as: Turtle, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1981

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