Seiko Cal. 6388 - 537

The 6388-537 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6388 caliber with 20j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-42fdf2c8e57e]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1988

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