Seiko Cal. 3880 - 820

Released in 1997, the Cal. 3880 with design code 820 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-bb0cdbe1d67c]

Also known as: Monster, Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1997

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