Seiko Cal. 6646 - 657

The 6646-657 is a sought-after Solar piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-ab30ea0e24b2]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1978

Related Models

• Seiko 5244-969
• Seiko 5659-166
• Seiko 7195-215
• Seiko 6691-781
• Seiko 6390-436
• Seiko 5636-406
• Seiko 5633-964
• Seiko 4587-469
• Seiko 7122-421
• Seiko 5275-928
• Seiko 5620-693
• Seiko 5236-506