Seiko Cal. 6642 - 861

The 6642-861 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6642 caliber with 23j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-c8c72ddd8d20]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1992

Related Models

• Seiko 5281-591
• Seiko 5694-759
• Seiko 6168-640
• Seiko 6131-684
• Seiko 7169-254
• Seiko 0750-741
• Seiko 6130-186
• Seiko 4469-625
• Seiko 6316-586
• Seiko 6117-529
• Seiko 5289-877
• Seiko 6675-710