Seiko Cal. 3821 - 909

The Seiko 3821-909 represents an important milestone in Seiko's 1986 lineup. Powered by the 3821 caliber with 28j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-689fa22c74d0]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1986

Related Models

• Seiko 6363-733
• Seiko 3887-589
• Seiko 7036-797
• Seiko 6647-204
• Seiko 7184-918
• Seiko 4522-823
• Seiko 6359-471
• Seiko 0729-245
• Seiko 6329-326
• Seiko 6144-377
• Seiko 5678-808
• Seiko 3837-307