Seiko Cal. 5661 - 857

Released in 1979, the Cal. 5661 with design code 857 was part of Seiko's domestic market collection. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-ad32269eac4b]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1979

Related Models

• Seiko 4564-852
• Seiko 7181-924
• Seiko 3898-653
• Seiko 6326-198
• Seiko 5623-968
• Seiko 6174-319
• Seiko 6363-683
• Seiko 6649-759
• Seiko 6146-115
• Seiko 5276-334
• Seiko 6324-526
• Seiko 0719-174