Seiko Cal. 6637 - 748

The 6637-748 is a sought-after Solar piece from Seiko's golden era. Powered by the 6637 caliber with 30j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-479cc7a9f86e]

Also known as: Silverwave

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1996

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