Seiko Cal. 6660 - 305

This Spring Drive model from 1977 features a 41mm PVD Black case. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-2368e362bf8d]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1977

Related Models

• Seiko 7170-705
• Seiko 4539-959
• Seiko 6219-450
• Seiko 6675-802
• Seiko 7189-302
• Seiko 6699-875
• Seiko 6330-892
• Seiko 5278-109
• Seiko 6173-523
• Seiko 5282-443
• Seiko 3828-318
• Seiko 0752-718