Seiko Cal. 4438 - 509

The Seiko 4438-509 represents an important milestone in Seiko's 1970 lineup. Powered by the 4438 caliber with 17j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-f086b9552056]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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