Seiko Cal. 6312 - 540

The 6312-540 is a sought-after Solar piece from Seiko's golden era. Powered by the 6312 caliber with 23j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-5d73beda4aa0]

Also known as: Bellmatic, World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1985

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