Apple Watch Series 4 (40mm) vs Apple Watch Series 3 (38mm)

Apple Watch Series 4 (40mm) $399
Apple Watch Series 3 (38mm) $399
Base Price
$399
Base Price
$399
CPU
S4
CPU
S3
GPU
S4
GPU
PowerVR GX6250 S3
Memory
1GB
Memory
768MB
Storage
16GB
Storage
16GB
Display
1.6" LTPO OLED 394x324 Touch
Display
1.3" OLED 340x272 Touch
S4
2 Cores
2 Threads
1.59GHz Clock
S3
2 Cores
2 Threads
0.884GHz Clock
N/A
0%
N/A
0%
N/A
0%
N/A
0%
S4
128 Shaders
Shared Memory
562MHz
PowerVR GX6250 S3
64 Shaders
Shared Memory
450MHz
N/A
0%
FP32 0.14 TFLOPS
0%
N/A
0%
FP32 0.06 TFLOPS
0%
1GB
768MB
Unknown # Tabs
0%
Unknown # Tabs
0%
16GB
16GB
Unknown # min 4K Video
0%
Unknown # min 4K Video
0%
No Optical Drive
No Optical Drive
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1.6"
LTPO OLED
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1.3"
OLED
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1,000 Nits Peak
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1,000 Nits Peak
60Hz
Variable
60Hz
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394x324
0.1 Million Pixels
325 PPI
340x272
0.1 Million Pixels
326 PPI
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1,000,000:1 Contrast
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1,000,000:1 Contrast
Touch
Capacitive
Touch
Capacitive
No Cameras
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No Cameras
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Not Included
Not Included
Not Included
Not Included
Not Included
Not Included
Not Included
Not Included
No Biometrics
No Biometrics
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1
1
No Cellular
Cellular
No Cellular
Cellular
Wi-Fi 4 (802.11n)
1 Stream
Up to 72Mbps
Wi-Fi 4 (802.11n)
1 Stream
Up to 72Mbps
Bluetooth 5.0
Bluetooth 4.2
Motion
Accelerometer
Gyroscope
Altimeter
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Motion
Accelerometer
Gyroscope
Altimeter
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Health
Optical Heart
Electrical Heart
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Health
Optical Heart
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Utility
Proximity
Ambient Light
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Utility
Proximity
Ambient Light
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Communication
NFC
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Communication
NFC
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Location
GPS
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GLONASS
Galileo
QZSS
Beidou
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Location
GPS
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GLONASS
Galileo
QZSS
Beidou
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Integrated Chipset
Integrated Chipset
No Ports
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No Ports
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External
External
Not Included
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Not Included
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0.9Wh
225mAh
3.82V
Lithium-Ion
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1.1Wh
279mAh
3.84V
Lithium-Ion
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Up to 18 Hours
Up to 18 Hours
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watchOS
watchOS
Build Material
Aluminum, Glass
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Up to 50m Water Resistant
Build Material
Aluminum, Glass
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Up to 50m Water Resistant
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Proprietary Wireless Charging
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Proprietary Wireless Charging
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Height
40 mm (1.6 in)
Width
34 mm (1.3 in)
Depth
10.7 mm (0.4 in)
Volume
0.015 L
Height
38.6 mm (1.5 in)
Width
33.3 mm (1.3 in)
Depth
11.4 mm (0.4 in)
Volume
0.015 L
Weight
30 g (1.06 oz)
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Weight
29 g (1.02 oz)
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CPU
Not Upgradable
CPU
Not Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Not Upgradable
Memory
Not Upgradable
Storage
Not Upgradable
Storage
Not Upgradable
Wi-Fi
Not Upgradable
Wi-Fi
Not Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Not Upgradable
Power Supply
Not Upgradable
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Change Results