Seiko Cal. 6644 - 576

The 6644-576 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 22j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-7a9fc890bd81]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1968

Related Models

• Seiko 0784-660
• Seiko 6614-637
• Seiko 4437-340
• Seiko 7155-289
• Seiko 6665-684
• Seiko 6694-421
• Seiko 4489-378
• Seiko 5626-130
• Seiko 5636-775
• Seiko 6638-394
• Seiko 6392-785
• Seiko 7173-910