Seiko Cal. 6378 - 356

The 6378-356 is a sought-after Solar piece from Seiko's golden era. Powered by the 6378 caliber with 22j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-32751be54668]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1987

Related Models

• Seiko 6210-112
• Seiko 6618-222
• Seiko 7192-709
• Seiko 3889-731
• Seiko 7066-150
• Seiko 0749-782
• Seiko 7163-534
• Seiko 6646-430
• Seiko 5252-563
• Seiko 5273-528
• Seiko 0728-137
• Seiko 7177-966