Seiko Cal. 6644 - 656

The 6644-656 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-cd7babb50002]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1999

Related Models

• Seiko 5233-922
• Seiko 7052-915
• Seiko 4520-753
• Seiko 6337-675
• Seiko 0710-829
• Seiko 7073-587
• Seiko 5632-309
• Seiko 3819-729
• Seiko 5254-683
• Seiko 7033-442
• Seiko 4446-147
• Seiko 4468-490