Seiko Cal. 5661 - 661

The Seiko 5661-661 represents an important milestone in Seiko's 1991 lineup. Powered by the 5661 caliber with 20j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-53c4f7c44770]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1991

Related Models

• Seiko 6335-877
• Seiko 6245-330
• Seiko 6156-453
• Seiko 7033-182
• Seiko 5669-188
• Seiko 7053-226
• Seiko 6245-652
• Seiko 7048-580
• Seiko 6293-865
• Seiko 6138-698
• Seiko 3865-453
• Seiko 3890-961