Seiko Cal. 3810 - 991

The Seiko 3810-991 represents an important milestone in Seiko's 1998 lineup. Powered by the 3810 caliber with 28j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-d50ab9109a93]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1998

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