Seiko Cal. 5647 - 991

The 5647-991 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5647 caliber with 31j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-03de43e76fc7]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1989

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