Seiko Cal. 6331 - 361

The 6331-361 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6331 caliber with 18j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-f34ca3e53a20]

Also known as: Silverwave, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1976

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