Seiko Cal. 6644 - 776

The 6644-776 is a sought-after Solar piece from Seiko's golden era. Powered by the 6644 caliber with 27j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-a0697afa96de]

Also known as: Sportsmatic, Crown

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1996

Related Models

• Seiko 7143-661
• Seiko 6216-265
• Seiko 5663-140
• Seiko 6347-331
• Seiko 7189-272
• Seiko 0717-461
• Seiko 6174-542
• Seiko 6395-872
• Seiko 6296-980
• Seiko 4474-613
• Seiko 0745-847
• Seiko 6675-868