Seiko Cal. 6657 - 300

The Seiko 6657-300 represents an important milestone in Seiko's 1977 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-99b85d30dcce]

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1977

Related Models

• Seiko 6272-145
• Seiko 3850-789
• Seiko 3861-491
• Seiko 4528-431
• Seiko 6689-566
• Seiko 0763-513
• Seiko 6284-834
• Seiko 6249-438
• Seiko 6343-965
• Seiko 6368-229
• Seiko 4569-298
• Seiko 4450-415