Seiko Cal. 6647 - 726

The 6647-726 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-d964f8b19075]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1989

Related Models

• Seiko 7167-288
• Seiko 4459-873
• Seiko 7180-138
• Seiko 6363-932
• Seiko 6390-442
• Seiko 0775-478
• Seiko 7035-192
• Seiko 4413-747
• Seiko 4455-617
• Seiko 7042-408
• Seiko 4462-832
• Seiko 5654-546