Seiko Cal. 6636 - 490

The 6636-490 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6636 caliber with 17j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-5893b00d63e8]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

Related Models

• Seiko 6188-603
• Seiko 6626-569
• Seiko 6663-247
• Seiko 6611-955
• Seiko 6620-992
• Seiko 6152-819
• Seiko 7145-305
• Seiko 4478-384
• Seiko 5210-642
• Seiko 5286-590
• Seiko 4441-192
• Seiko 6175-181