Seiko Cal. 6381 - 250

The Seiko 6381-250 represents an important milestone in Seiko's 1970 lineup. Powered by the 6381 caliber with 21j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-2bb3f64620d7]

Also known as: Bellmatic, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1970

Related Models

• Seiko 4467-455
• Seiko 3857-102
• Seiko 6626-346
• Seiko 6662-948
• Seiko 6617-770
• Seiko 7099-270
• Seiko 5658-829
• Seiko 4442-397
• Seiko 7084-605
• Seiko 4524-375
• Seiko 5269-313
• Seiko 5669-707