Seiko Cal. 4440 - 657

The 4440-657 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-98ad53b58984]

Also known as: Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1968

Related Models

• Seiko 4554-754
• Seiko 4439-107
• Seiko 3870-908
• Seiko 4573-277
• Seiko 6242-601
• Seiko 6219-869
• Seiko 0754-181
• Seiko 6315-363
• Seiko 5299-412
• Seiko 4547-750
• Seiko 6689-540
• Seiko 6199-417