Seiko Cal. 4485 - 638

The Seiko 4485-638 represents an important milestone in Seiko's 1991 lineup. Powered by the 4485 caliber with 26j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-338412cada83]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1991

Related Models

• Seiko 6147-201
• Seiko 3824-573
• Seiko 7060-376
• Seiko 7145-926
• Seiko 4435-939
• Seiko 7188-987
• Seiko 6219-848
• Seiko 3867-556
• Seiko 5234-637
• Seiko 6319-264
• Seiko 4455-203
• Seiko 6229-201