Seiko Cal. 5645 - 686

The Seiko 5645-686 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-4897e45d84f7]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1972

Related Models

• Seiko 4443-388
• Seiko 6653-934
• Seiko 0749-131
• Seiko 7067-688
• Seiko 0710-165
• Seiko 7199-392
• Seiko 7180-126
• Seiko 7129-211
• Seiko 7068-266
• Seiko 7149-617
• Seiko 7035-844
• Seiko 6237-867