Seiko Cal. 6642 - 956

The 6642-956 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6642 caliber with 25j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-a3901542ab3f]

Also known as: Bullhead, Rally

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1969

Related Models

• Seiko 4593-956
• Seiko 5262-176
• Seiko 6114-276
• Seiko 4455-438
• Seiko 3873-757
• Seiko 6373-553
• Seiko 6646-690
• Seiko 7110-652
• Seiko 4444-172
• Seiko 6220-786
• Seiko 6629-697
• Seiko 6343-498