Seiko Cal. 4550 - 538

The 4550-538 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 65 hours power reserve. [seikata-wm-9d51883234c4]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

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