Seiko Cal. 6671 - 904

Released in 1978, the Cal. 6671 with design code 904 was part of Seiko's domestic market collection. Powered by the 6671 caliber with 21j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-0a25db670f30]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1978

Related Models

• Seiko 4469-191
• Seiko 7155-230
• Seiko 0761-156
• Seiko 6197-255
• Seiko 7068-762
• Seiko 5216-134
• Seiko 6387-861
• Seiko 7023-566
• Seiko 0714-555
• Seiko 4514-161
• Seiko 0779-765
• Seiko 4555-936