Seiko Cal. 6641 - 344

The Seiko 6641-344 represents an important milestone in Seiko's 1986 lineup. It features a Silver dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-68e9842d6e66]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1986

Related Models

• Seiko 0741-383
• Seiko 5229-375
• Seiko 5685-865
• Seiko 4414-603
• Seiko 0768-528
• Seiko 6191-616
• Seiko 4456-371
• Seiko 0723-529
• Seiko 5689-451
• Seiko 3874-263
• Seiko 7099-156
• Seiko 3822-897