Seiko Cal. 4438 - 856

The Seiko 4438-856 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-55fd25b55e01]

Also known as: Samurai, Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1979

Related Models

• Seiko 7165-447
• Seiko 3895-990
• Seiko 0751-406
• Seiko 5618-123
• Seiko 0732-509
• Seiko 6313-412
• Seiko 4480-726
• Seiko 5611-425
• Seiko 5255-123
• Seiko 4538-159
• Seiko 7079-319
• Seiko 6697-662