Seiko Cal. 4550 - 942

This Hand-Winding model from 1987 features a 41mm Hardlex-Coated Steel case. Powered by the 4550 caliber with 31j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-a102b66ec3cc]

Also known as: Rally, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1987

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