Seiko Cal. 6678 - 563

The 6678-563 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6678 caliber with 21j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-ffc790e1d247]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1975

Related Models

• Seiko 4538-197
• Seiko 4492-202
• Seiko 7047-254
• Seiko 4594-116
• Seiko 6615-533
• Seiko 6654-459
• Seiko 6351-576
• Seiko 6633-439
• Seiko 3890-996
• Seiko 7010-616
• Seiko 6221-245
• Seiko 6253-512