Seiko Cal. 3870 - 528

The 3870-528 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-9e702bb169d9]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1975

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