Seiko Cal. 4442 - 263

The Seiko 4442-263 represents an important milestone in Seiko's 1968 lineup. Powered by the 4442 caliber with 27j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-4e3d99b7dedb]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1968

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