Seiko Cal. 3820 - 216

The 3820-216 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-9dc45cd1f433]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1978

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