Seiko Cal. 5648 - 940

The Seiko 5648-940 represents an important milestone in Seiko's 1987 lineup. Powered by the 5648 caliber with 21j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-ff08b468de44]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1987

Related Models

• Seiko 6172-697
• Seiko 6254-734
• Seiko 4572-664
• Seiko 6273-332
• Seiko 6229-444
• Seiko 7161-564
• Seiko 4467-405
• Seiko 5235-989
• Seiko 5278-350
• Seiko 6657-812
• Seiko 0775-142
• Seiko 4452-711