Seiko Cal. 6642 - 426

This Hand-Winding model from 1965 features a 36mm Two-Tone case. Powered by the 6642 caliber with 22j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-70e76fd7089b]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1965

Related Models

• Seiko 3844-156
• Seiko 6167-317
• Seiko 6691-785
• Seiko 4445-510
• Seiko 3880-525
• Seiko 3873-409
• Seiko 6675-991
• Seiko 6664-865
• Seiko 6231-523
• Seiko 6343-815
• Seiko 6686-160
• Seiko 6384-905