Seiko Cal. 6645 - 332

The 6645-332 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-eda24aaa3085]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

Related Models

• Seiko 0791-466
• Seiko 6132-995
• Seiko 6342-700
• Seiko 6385-334
• Seiko 4467-193
• Seiko 0720-566
• Seiko 4424-336
• Seiko 0799-147
• Seiko 4411-167
• Seiko 6310-955
• Seiko 6337-158
• Seiko 3815-808