Seiko Cal. 3827 - 648

The Seiko 3827-648 represents an important milestone in Seiko's 1967 lineup. Powered by the 3827 caliber with 33j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-7403cbe8500c]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1967

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