Seiko Cal. 5271 - 406

The Seiko 5271-406 represents an important milestone in Seiko's 1971 lineup. Powered by the 5271 caliber with 35j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-5da20384dc04]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1971

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