Seiko Cal. 6658 - 907

The 6658-907 is a sought-after Solar piece from Seiko's golden era. Powered by the 6658 caliber with 29j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-c9664eb26e4c]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1981

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