Seiko Cal. 6631 - 205

Seiko 6631-205

The 6631-205 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6631 caliber with 31j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-655ddc5813ec]

Also known as: World Timer

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Silver
Jewels
31j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1986

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seikata-wm-655ddc5813ec