Seiko Cal. 6331 - 505

The 6331-505 is a sought-after Solar piece from Seiko's golden era. Powered by the 6331 caliber with 30j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-af8c61f0eb06]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1990

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