Seiko Cal. 5658 - 618

The 5658-618 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5658 caliber with 20j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-ca6f55ef3d45]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1997

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