Seiko Cal. 3870 - 825

The 3870-825 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-384c48ab6a78]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1973

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