Seiko Cal. 4439 - 342

Released in 1971, the Cal. 4439 with design code 342 was part of Seiko's domestic market collection. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-d084ca4532fa]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1971

Related Models

• Seiko 3837-848
• Seiko 4465-101
• Seiko 7184-243
• Seiko 6368-163
• Seiko 6188-947
• Seiko 6259-383
• Seiko 7189-183
• Seiko 4566-403
• Seiko 7185-495
• Seiko 7020-117
• Seiko 4572-610
• Seiko 6682-882