Seiko Cal. 6644 - 991

The Seiko 6644-991 represents an important milestone in Seiko's 1995 lineup. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-6962bf99e4ce]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1995

Related Models

• Seiko 5687-113
• Seiko 6613-691
• Seiko 0723-729
• Seiko 6214-232
• Seiko 4599-208
• Seiko 4511-100
• Seiko 7195-349
• Seiko 6287-442
• Seiko 6166-736
• Seiko 7142-727
• Seiko 5621-315
• Seiko 5628-421