Seiko Cal. 6644 - 781

The Seiko 6644-781 represents an important milestone in Seiko's 1988 lineup. Powered by the 6644 caliber with 19j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-b1cb1de87627]

Also known as: Monster, Pogue

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1988

Related Models

• Seiko 7182-195
• Seiko 7043-214
• Seiko 5212-138
• Seiko 4587-922
• Seiko 6667-324
• Seiko 7091-439
• Seiko 6326-928
• Seiko 5294-161
• Seiko 5227-414
• Seiko 3816-170
• Seiko 5670-799
• Seiko 6616-861