Seiko Cal. 5681 - 305

This Spring Drive model from 1973 features a 41mm PVD Black case. Powered by the 5681 caliber with 34j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-4f35438b4329]

Also known as: Navigator, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1973

Related Models

• Seiko 5626-135
• Seiko 4482-676
• Seiko 6158-630
• Seiko 5298-383
• Seiko 6696-718
• Seiko 6312-105
• Seiko 6629-410
• Seiko 4412-518
• Seiko 5252-825
• Seiko 4454-239
• Seiko 6630-473
• Seiko 6174-594