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gptkbp:instance_of
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gptkb:movement
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gptkbp:complications
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GMT function
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gptkbp:dial_color
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gptkb:black
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gptkbp:dimensions
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30.0 mm x 4.9 mm
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gptkbp:features
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date display
manual winding
hacking seconds
automatic winding
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gptkbp:frequency
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28,800 vibrations per hour
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gptkbp:glass_type
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sapphire crystal
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https://www.w3.org/2000/01/rdf-schema#label
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Seiko 9 R87
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gptkbp:introduced
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gptkb:2005
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gptkbp:jewels
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30 jewels
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gptkbp:manufacturer
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gptkb:Seiko_Instruments_Inc.
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gptkbp:marketed_as
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high-end watch movement
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gptkbp:material
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stainless steel
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gptkbp:notable_models
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gptkb:Grand_Seiko_SBGA413
gptkb:Grand_Seiko_SBGA413_G
gptkb:Grand_Seiko_SBGA415
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gptkbp:performance
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±15 seconds per month
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gptkbp:power_reserve
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72 hours
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gptkbp:power_source
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spring drive
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gptkbp:related_to
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gptkb:Seiko_9_R65
gptkb:Seiko_9_R86
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gptkbp:steering
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automatic and manual
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gptkbp:type
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spring drive movement
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gptkbp:used_in
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Seiko Grand Seiko watches
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gptkbp:water_resistance
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gptkb:100_meters
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gptkbp:weight
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approximately 100 grams
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gptkbp:bfsParent
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gptkb:Seiko
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gptkbp:bfsLayer
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4
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