Seiko Cal. 4439 - 863

The 4439-863 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4439 caliber with 31j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-2bd6dad624df]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1968

Related Models

• Seiko 7034-581
• Seiko 7127-214
• Seiko 4498-125
• Seiko 6346-390
• Seiko 6179-671
• Seiko 6663-841
• Seiko 0747-270
• Seiko 7015-982
• Seiko 3828-974
• Seiko 7138-626
• Seiko 6250-923
• Seiko 6686-447