Seiko Cal. 5657 - 133

The 5657-133 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5657 caliber with 20j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-f7bcc3b31979]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1965

Related Models

• Seiko 6286-193
• Seiko 4593-371
• Seiko 5639-296
• Seiko 7036-321
• Seiko 5668-399
• Seiko 5215-228
• Seiko 6358-963
• Seiko 3861-120
• Seiko 3894-697
• Seiko 7051-624
• Seiko 6634-820
• Seiko 6359-469