Seiko Cal. 4538 - 438

The Seiko 4538-438 represents an important milestone in Seiko's 1978 lineup. Powered by the 4538 caliber with 35j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-3605d97ec991]

Also known as: Panda, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1978

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