Seiko Cal. 5638 - 148

The 5638-148 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5638 caliber with 27j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-ab16262d7842]

Also known as: Turtle, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1993

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