Seiko Cal. 5631 - 248

The 5631-248 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5631 caliber with 24j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-faae18b0de07]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1993

Related Models

• Seiko 6619-603
• Seiko 6618-992
• Seiko 7197-149
• Seiko 6181-691
• Seiko 0740-652
• Seiko 3868-258
• Seiko 3830-543
• Seiko 0723-770
• Seiko 6227-686
• Seiko 0773-931
• Seiko 7188-287
• Seiko 7132-149