Seiko Cal. 6644 - 624

The Seiko 6644-624 represents an important milestone in Seiko's 1986 lineup. Powered by the 6644 caliber with 25j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-4204d927aa9a]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1986

Related Models

• Seiko 6292-752
• Seiko 4536-997
• Seiko 5266-386
• Seiko 7134-381
• Seiko 6394-623
• Seiko 5283-594
• Seiko 6263-798
• Seiko 3844-174
• Seiko 3849-192
• Seiko 0720-533
• Seiko 0793-794
• Seiko 4471-854