Seiko Cal. 6687 - 665

The 6687-665 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-a06d7cab2e71]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1983

Related Models

• Seiko 6269-485
• Seiko 6329-836
• Seiko 6661-283
• Seiko 4471-348
• Seiko 6238-717
• Seiko 4420-875
• Seiko 6145-929
• Seiko 7054-112
• Seiko 4445-566
• Seiko 6623-409
• Seiko 4436-729
• Seiko 7129-898