Seiko Cal. 3877 - 615

Released in 1986, the Cal. 3877 with design code 615 was part of Seiko's domestic market collection. It features a White dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-b19dcb14ef88]

Also known as: Monster, Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1986

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