Seiko Cal. 6331 - 541

Seiko 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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