Seiko Cal. 7135 - 644

The 7135-644 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7135 caliber with 18j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-99eecd3e5114]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1992

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