Seiko Cal. 6661 - 646

The 6661-646 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6661 caliber with 19j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-3d70d203b45b]

Also known as: Shogun, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1982

Related Models

• Seiko 4539-947
• Seiko 7046-825
• Seiko 3878-352
• Seiko 6388-142
• Seiko 6697-360
• Seiko 6252-279
• Seiko 3891-723
• Seiko 5654-775
• Seiko 7033-433
• Seiko 6171-117
• Seiko 6111-481
• Seiko 3840-361