Seiko Cal. 3815 - 213

The 3815-213 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3815 caliber with 20j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-0d1b8f31cb56]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1973

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