Seiko Cal. 6647 - 232

This Quartz model from 1966 features a 35mm Two-Tone case. Powered by the 6647 caliber with 20j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-38338c1b815a]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

Related Models

• Seiko 3893-384
• Seiko 4435-973
• Seiko 3878-524
• Seiko 6661-715
• Seiko 5248-840
• Seiko 3898-947
• Seiko 5240-636
• Seiko 5255-497
• Seiko 4442-401
• Seiko 4529-828
• Seiko 0766-588
• Seiko 5249-251