Seiko Cal. 5261 - 540

The 5261-540 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5261 caliber with 31j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-96a1f40ad20d]

Also known as: Bellmatic, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1975

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