Seiko Cal. 6637 - 292

The 6637-292 is a sought-after Solar piece from Seiko's golden era. Powered by the 6637 caliber with 25j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-636b6e0cd79d]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1986

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