Seiko Cal. 5681 - 636

This Solar model from 1997 features a 43mm PVD Black case. Powered by the 5681 caliber with 34j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-7bc88831ad46]

Also known as: Tuna, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1997

Related Models

• Seiko 0713-174
• Seiko 5243-380
• Seiko 4560-428
• Seiko 6191-433
• Seiko 5212-237
• Seiko 5250-943
• Seiko 3876-387
• Seiko 6184-744
• Seiko 6335-455
• Seiko 6668-174
• Seiko 5241-876
• Seiko 3830-340