Seiko Cal. 4550 - 371

The 4550-371 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4550 caliber with 32j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-0d4085a98463]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1992

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