Seiko Cal. 4538 - 988

The 4538-988 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4538 caliber with 36j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-5633c8f407f9]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1999

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