Seiko Cal. 6645 - 400

The 6645-400 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-ab4d75bb4ec7]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1991

Related Models

• Seiko 6621-284
• Seiko 6252-311
• Seiko 6233-131
• Seiko 0759-199
• Seiko 6248-126
• Seiko 6357-928
• Seiko 6193-491
• Seiko 7179-772
• Seiko 5684-862
• Seiko 4592-232
• Seiko 6366-124
• Seiko 6214-857