Seiko Cal. 6691 - 568

The 6691-568 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-9db4f391affd]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

Related Models

• Seiko 3838-815
• Seiko 6638-449
• Seiko 7147-217
• Seiko 5289-653
• Seiko 7171-257
• Seiko 4412-815
• Seiko 3813-517
• Seiko 0744-221
• Seiko 0798-334
• Seiko 4492-926
• Seiko 5616-485
• Seiko 4511-563