Seiko Cal. 5266 - 644

The Seiko 5266-644 represents an important milestone in Seiko's 1991 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-4ffc499005df]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1991

Related Models

• Seiko 5655-584
• Seiko 5219-497
• Seiko 0775-740
• Seiko 0710-810
• Seiko 5251-862
• Seiko 3826-443
• Seiko 7177-455
• Seiko 5699-195
• Seiko 5216-160
• Seiko 6182-887
• Seiko 6330-676
• Seiko 5248-744