Seiko Cal. 5631 - 555

The 5631-555 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-c13a5a671067]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1991

Related Models

• Seiko 7022-648
• Seiko 6120-232
• Seiko 3817-843
• Seiko 5234-660
• Seiko 6642-657
• Seiko 4460-225
• Seiko 6665-173
• Seiko 3838-647
• Seiko 3821-852
• Seiko 7123-576
• Seiko 6349-719
• Seiko 6246-507