Seiko Cal. 6650 - 540

The Seiko 6650-540 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-f97cb264c88d]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1988

Related Models

• Seiko 7092-597
• Seiko 7095-303
• Seiko 0739-300
• Seiko 6372-620
• Seiko 4544-753
• Seiko 7019-905
• Seiko 7192-839
• Seiko 6310-784
• Seiko 3858-672
• Seiko 6135-937
• Seiko 7013-386
• Seiko 7061-230