Seiko Cal. 6330 - 818

The 6330-818 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6330 caliber with 32j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-616e46fcc1ee]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1985

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