Seiko Cal. 4439 - 813

This Quartz model from 1989 features a 38mm Two-Tone case. Powered by the 4439 caliber with 36j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-fdf36ce12a4c]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1989

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