Seiko Cal. 6136 - 641

This Automatic model from 1974 features a 41mm Hardlex-Coated Steel case. Powered by the 6136 caliber with 32j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-d813ab878fda]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1974

Related Models

• Seiko 4553-448
• Seiko 3862-869
• Seiko 6699-131
• Seiko 7131-637
• Seiko 5259-347
• Seiko 4417-321
• Seiko 7181-896
• Seiko 6258-525
• Seiko 0727-836
• Seiko 7137-560
• Seiko 7184-352
• Seiko 4465-240