Seiko Cal. 3816 - 489

This Hand-Winding model from 1978 features a 40mm PVD Black case. Powered by the 3816 caliber with 25j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-f1d43b72a719]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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