Skip to content

Apple Watch 3 Aluminum 42mm vs Apple Watch 3 Aluminum 38mm

Side by side comparison, pros, cons, differences between Apple Watch 3 Aluminum 42mm vs Apple Watch 3 Aluminum 38mm smartwatches with full specifications. What's the best?

,
Compare Apple Watch 3 Aluminum X04Apple Watch 3 Aluminum 42mm
Apple Watch 3 Aluminum 42mm
1.65"
AMOLED

390x312

N/A
MP

768MB
RAM

32bit Dual

352
mAh

(Non removable)

vs
Compare Apple Watch 3 Aluminum X01Apple Watch 3 Aluminum 38mm
Apple Watch 3 Aluminum 38mm
1.5"
AMOLED

340x272

N/A
MP

768MB
RAM

32bit Dual

279
mAh

(Non removable)

What's the best smartwatch? The PhoneMore's choice is Apple Watch 3 Aluminum 42mm

The phonemore's choice is much more technical than personal, so don't just evaluate it. Our goal is to help, but what's important to us may not be important to you. You decide which is the best! Comment!


04 Advantages Apple Watch 3 Aluminum 42mm
Watch 3 Aluminum 42mmvsWatch 3 Aluminum 38mm
 32%32%
+Higher resolution screen
390x312 pixelsvs340x272 pixels
 4%4%
+Crisper display of text, images and video because it has more pixels per inch (ppi)
303 PPIvs290 PPI
 10%10%
+Larger screen
1.65"vs1.5"
 26%26%
+Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
352 mAhvs279 mAh

01 Advantages Apple Watch 3 Aluminum 38mm
Watch 3 Aluminum 38mmvsWatch 3 Aluminum 42mm
 19%19%
+Lighter
27 grams (.95 ounces)vs32 grams (1.12 ounces)

25 Common items in both devices
1Ghz 32bit Dual-Core
768MB LPDDR4
8GB (5GB user available)
11.4 millimeters (0.45 inches)
Aluminum body, front glass, plastic composite back
AMOLED
16 million
Capacitive
Multitouch
Not supported
Accelerometer
Ambient Light
Gyroscope
Barometer
Heart rate
Pedometer
Li-Ion (Non removable)
Speakerphone
Vibrating alert
A-GPS, GeoTagging, GLONASS
802.11 b/g/n (2.4Ghz)
4.2 version A2DP
NFC
Scratch-resistant glass
50 meters waterproof
+ COMMON ITEMS

Check the comparison table below for more items that are not evaluated in comparison score above.

Model and physical featuresApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
ModelWatch 3 Aluminum 42mmWatch 3 Aluminum 38mm
Also known asApple Watch Series 3 A1859 GPS 8GB, Apple Watch S3, iWatchApple Watch Series 3 A1858 GPS 8GB, Apple Watch S3, iWatch
Country or region availableVarious (International)Various (International)
BrandAppleApple
Release dateSeptember, 2017September, 2017
Depth11.4 millimeters (0.45 inches)11.4 millimeters (0.45 inches)
Size (width x height)36.4 x 42.5 millimeters (1.43 x 1.67 in)33.3 x 38.6 millimeters (1.31 x 1.52 in)
Weight32 grams (1.12 ounces)27 grams (.95 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaNot supportedNot supported
Build, materialsAluminum body, front glass, plastic composite backAluminum body, front glass, plastic composite back
Protection against water and others50 meters waterproof50 meters waterproof
Operating system (OS)Apple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Operating systemWatchOS 4.0WatchOS 4.0
Firmware updateWatchOS 5.0WatchOS 5.0
HardwareApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Architecture - Chipset32bit - Apple S3 (28nm)32bit - Apple S3 (28nm)
CPU processor1Ghz Dual-Core ARM Cortex-A71Ghz Dual-Core ARM Cortex-A7
GPU graphical controllerPowerVR G6200PowerVR G6200
RAM memory768MB LPDDR4768MB LPDDR4
Internal storage8GB (5GB user available)8GB (5GB user available)
External storageNot supportedNot supported
DisplayApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Display typeAMOLEDAMOLED
Screen size1.65" inches1.5" inches
Screen-to-body ratio~55.4% (screen-to-body ratio)~55.1% (screen-to-body ratio)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Display resolution390x312 pixels340x272 pixels
Pixel density (dot pitch)303 PPI290 PPI
Colors16 million16 million
Scratch-resistant glassScratch-resistant glassScratch-resistant glass
Mobile networks and dataApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Dual-SIMNot supportedNot supported
SIM cardNot supportedNot supported
GSM Mhz bandNot supportedNot supported
Primary 2G networkNot supportedNot supported
Primary 3G networkNot supportedNot supported
Primary 4G/5G networkNot supportedNot supported
Primary data networkNot supportedNot supported
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported
Maximum download/uploadfeature not registeredfeature not registered
Messaging and callingApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
MessagingSMS, E-mailSMS, E-mail
SpeakerphoneSupportedSupported
Video callingNot supportedNot supported
Call controlNot supportedNot supported
Primary / back cameraApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Main cameraNot supportedNot supported
Main camera resolutionNot supportedNot supported
Video recording (primary)Not supportedNot supported
FlashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusNot supportedNot supported
Touch focusNot supportedNot supported
Image stabilizationNot supportedNot supported
ZoomNot supportedNot supported
Face/smile detectionNot supportedNot supported
BSI sensorNot supportedNot supported
HDRNot supportedNot supported
Front / secondary cameraApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Front cameraNot supportedNot supported
Front camera resolutionNot supportedNot supported
Video recording (secondary)Not supportedNot supported
Front flashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
MultimediaApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsMP4, H.264, H.263MP4, H.264, H.263
Audio formatsMP3, WAV, eAAC+, FLACMP3, WAV, eAAC+, FLAC
Connectivity and interfacesApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
USBNot supportedNot supported
TV outputNot supportedNot supported
Audio outputNot supportedNot supported
Bluetooth4.2 version A2DP4.2 version A2DP
WiFi802.11 b/g/n (2.4Ghz)802.11 b/g/n (2.4Ghz)
DLNANot supportedNot supported
NFCSupportedSupported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS
Infrared portNot supportedNot supported
Other functionsApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
Active noise cancellationNot supportedNot supported
Vibrating alertSupportedSupported
Ringtonesfeature not registeredfeature not registered
Web browserNot supportedNot supported
Java / Flash playerNot supportedNot supported
SensorsAccelerometer
Ambient Light
Gyroscope
Barometer
Heart rate
Pedometer
Accelerometer
Ambient Light
Gyroscope
Barometer
Heart rate
Pedometer
Other features- Colors: Silver, Gold, Space Gray
- Sport Band or Nike Sport Band
- 1000 nits screen
- 3D Touch display
- Siri
- Colors: Silver, Gold, Space Gray
- Sport Band or Nike Sport Band
- 1000 nits screen
- 3D Touch display
- Siri
Power supply and autonomyApple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
BatteryLi-Ion (Non removable)
Magnetic charging (dock)
Li-Ion (Non removable)
Magnetic charging (dock)
Battery capacity352 mAh279 mAh
Battery model / charger (watts)feature not registeredfeature not registered
Talk time1080 minutes | 18 hours | 0.8 day1080 minutes | 18 hours | 0.8 day
Standbyfeature not registeredfeature not registered
Radiation rate (SAR)Apple Watch 3 Aluminum 42mmApple Watch 3 Aluminum 38mm
SAR USA, Mexico, Colombia0.11 W/Kg (head) | 0.02 W/Kg (body)0.17 W/Kg (head) | 0.03 W/Kg (body)
SAR European Union, UKfeature not registeredfeature not registered