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gptkbp:instance_of
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gptkb:Apple_Watch
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gptkbp:accessories
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gptkb:Docker
gptkb:screen_protector
replacement bands
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gptkbp:app_store
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gptkb:Apple_App_Store
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gptkbp:associated_band
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Apple Watch bands
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gptkbp:battery_life
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18 hours
up to 18 hours
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gptkbp:color_options
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gptkb:silver
gptkb:gold
Space Gray
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gptkbp:community_health
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heart rate monitoring
activity tracking
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gptkbp:connectivity
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gptkb:Wi-Fi
gptkb:Bluetooth
gptkb:GPS
gptkb:Bluetooth_5.0
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gptkbp:customization_options
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bands
watch faces
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gptkbp:dimensions
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40mm or 44mm case size
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gptkbp:features
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gptkb:fall_detection
ECG monitoring
ECG app
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gptkbp:has_feature
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gptkb:GPS
Water resistance
Heart rate monitoring
Always-on display
ECG monitoring
Fall detection
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https://www.w3.org/2000/01/rdf-schema#label
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Apple Watch Series 4
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gptkbp:is_compatible_with
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i OS devices
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gptkbp:manufacturer
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gptkb:Apple_Inc.
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gptkbp:material
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gptkb:Titanium
Aluminum
Ceramic
Stainless Steel
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gptkbp:monitors
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Larger display
LTPO OLED
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gptkbp:music
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gptkb:Apple_Music
gptkb:Spotify
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gptkbp:notifications
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app notifications
call notifications
text notifications
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gptkbp:operating_system
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gptkb:watch_OS
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gptkbp:payment_methods
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gptkb:Apple_Pay
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gptkbp:price
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starting at $399
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gptkbp:processor
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gptkb:S4
S4 chip
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gptkbp:produced_by
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gptkb:Apple_Inc.
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gptkbp:release_date
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September 2018
September 21, 2018
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gptkbp:released_in
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gptkb:2018
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gptkbp:resolution
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324 x 394 pixels (40mm) or 368 x 448 pixels (44mm)
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gptkbp:screen_size
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1.57 inches (40mm) or 1.78 inches (44mm)
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gptkbp:sensor
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gptkb:gyroscope
Gyroscope
Accelerometer
accelerometer
ambient light sensor
barometric altimeter
Heart rate sensor
optical heart sensor
electrocardiogram (ECG) sensor
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gptkbp:storage
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16 GB
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gptkbp:successor
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gptkb:Apple_Watch_Series_5
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gptkbp:track
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workout tracking
swimming tracking
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gptkbp:voice_acting
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gptkb:Siri
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gptkbp:water_resistance
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50 meters
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gptkbp:weight
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30.3 grams (40mm) or 40.6 grams (44mm)
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gptkbp:bfsParent
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gptkb:Apple_Watch
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gptkbp:bfsLayer
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4
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