Seiko Cal. 6631 - 766

The 6631-766 is a sought-after Solar piece from Seiko's golden era. Powered by the 6631 caliber with 36j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-d81a9b3c0b38]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1995

Related Models

• Seiko 0747-308
• Seiko 7188-206
• Seiko 4417-625
• Seiko 7117-252
• Seiko 5276-534
• Seiko 6658-439
• Seiko 6254-558
• Seiko 6123-235
• Seiko 5624-865
• Seiko 6274-801
• Seiko 7063-562
• Seiko 4492-739