Seiko Cal. 6642 - 654

The 6642-654 is a sought-after Solar piece from Seiko's golden era. Powered by the 6642 caliber with 20j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-df1f5a4d4912]

Also known as: Silverwave, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1991

Related Models

• Seiko 6285-912
• Seiko 4422-904
• Seiko 5641-836
• Seiko 7060-372
• Seiko 4582-988
• Seiko 5626-711
• Seiko 6115-777
• Seiko 7184-399
• Seiko 5261-475
• Seiko 6342-983
• Seiko 6275-110
• Seiko 4469-368