Seiko Cal. 6331 - 541

The 6331-541 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6331 caliber with 17j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-0eaf01c01d18]

Also known as: Bullhead, UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1977

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