Seiko Cal. 3877 - 947

Released in 1965, the Cal. 3877 with design code 947 was part of Seiko's domestic market collection. With its 20mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-d75610add5eb]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1965

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