Seiko Cal. 4431 - 448

The Seiko 4431-448 represents an important milestone in Seiko's 1999 lineup. Powered by the 4431 caliber with 35j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-8f200a39ac08]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1999

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