Seiko Cal. 4445 - 307

The Seiko 4445-307 represents an important milestone in Seiko's 1977 lineup. Powered by the 4445 caliber with 25j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-70b1ec23b9b8]

Also known as: Turtle, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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