Seiko Cal. 5271 - 398

The 5271-398 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5271 caliber with 23j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-9b274b965183]

Also known as: Monster, Bullhead

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1977

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