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The Apple Watch Series 3 is available in two sizes; 38mm and 42mm, these two have same features but differ in the respective sizes which kind of gives iWatch lovers options to choose based wrist size. Moreover, each of these two is available in cellular and GPS models. Compare the full specifications, features and prices of the Apple Watch Series 3 (38mm) vs (42mm) to find out the difference. Meanwhile, while the Watch 3 is an outstanding smartwatch, there’s a newer and more equipped Watch 5 which comes with additional features, although will cost you more.

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Apple Watch Series 3 (38mm) vs (42mm): Specifications Compared



Product Info	Apple Watch Series 3 (38mm) Specifications, Features and Price Buy @ Amazon	Apple Watch Series 3 (42mm) Specifications, Features and Price Buy @ Amazon
Price	-	-
ABOUT DEVICE	ABOUT DEVICE	ABOUT DEVICE
Device name	Apple Watch Series 3 (38mm)	Apple Watch Series 3 (42mm)
Device type	Standalone/Fitness smartwatch	Standalone/Fitness smartwatch
Gender	Unisex	Unisex
Release date	September, 2017	September, 2017
Predecessor	Apple Watch Series 2	Apple Watch Series 2
Successor	Apple Watch Series 4	Apple Watch Series 4
Versions	Apple Watch Nike+	Apple Watch Nike+
BODY	BODY	BODY
Dimension	38.6 x 33.3 x 11.4 mm	42.5 x 36.4 x 11.4 mm
Weight	—	52.8 grams
Shape	Rectangular	Rectangular
Case material	Aluminum	Aluminum
Strap material	Elastomer	Elastomer
Bezel material	Bezeless	Bezeless
Strap size	22 mm	24mm
Screen protection	Sapphire glass	Sapphire glass
Water resistance	Yes, 5ATM	Yes, 5ATM
Durability test	—	—
Swim-proof	Yes	Yes, recommended
Color	Black, White	Black, White
DISPLAY	DISPLAY	DISPLAY
Display size	1.5 inch	1.65 inch
Display type	1000nit, OLED	1000nit, OLED
Display resolution	272 x 340 pixels	312 x 390 pixels
Pixel density	—	—
Always on	No	No
Custom watch face	Yes	Yes
Input type	1 Physical button, Digital crown, Touchscreen	1 Physical button, Digital crown, Touchscreen
CONNECTIVITY	CONNECTIVITY	CONNECTIVITY
Bluetooth	Yes, Bluetooth v4.2 LE	Yes, Bluetooth v4.2 LE
Bluetooth calling	Yes	Yes
GPS	GLONASS, GPS	GLONASS, GPS
NFC	Yes	Yes
Wi-Fi	Yes, Wi-Fi 802.11 b/g/n	Yes, Wi-Fi 802.11 b/g/n
MEMORY	MEMORY	MEMORY
RAM	0.768GB	0.768GB
ROM	16GB (GPS + Cellular), 8GB (GPS)	16GB (GPS + Cellular), 8GB (GPS)
Memory card slot	No	No
CELLULAR CONNECTIVITY	CELLULAR CONNECTIVITY	CELLULAR CONNECTIVITY
Technology	4G LTE	4G LTE
SIM type	e-SIM	e-SIM
Band	—	—
NOTIFICATIONS	NOTIFICATIONS	NOTIFICATIONS
SMS alert	Yes	Yes
Calls alert	Yes	Yes
Email alert	Yes	Yes
Event reminder	Yes	Yes
Third-party apps alert	Yes	Yes
MEDIA	MEDIA	MEDIA
Audio	mp3/mp4	mp3/mp4
Bluetooth music	Yes	Yes
Loudspeaker	Yes	Yes
Microphone	Yes	Yes
Camera	No	No
Radio	No	No
SENSORS	SENSORS	SENSORS
Accelerometer	Yes	Yes
Altimeter	Yes	Yes
Ambient light	Yes	Yes
Barometer	Yes	Yes
Compass	No	No
ECG	No	No
Gyroscope	Yes	Yes
HRM	Yes	Yes
Pulse oximeter	No	No
Thermometer	App, No	App, No
Other sensors	—	—
ACTIVITY TRACKING	ACTIVITY TRACKING	ACTIVITY TRACKING
Blood oxygen	No	No
Blood Pressure	No	No
Calories	Yes	Yes
Distance	Yes	Yes
ECG tracking	No	No
Fitness Level	Yes	Yes
Heart rate monitoring	Yes	Yes
Sleep tracking	Yes	Yes
Steps	Yes	Yes
Stress	Yes	Yes
Incidental fall detection	No	No
Menstrual cycle	Yes	Yes
VO2 Max	Yes	Yes
Swim-tracking	Yes	Yes
Swim-heart tracking	No	No
On-screen workout	No	No
Sport modes	Yes	Yes
BATTERY	BATTERY	BATTERY
Battery type	Non-removable Li-ion battery	Non-removable Li-ion battery
Battery capacity	279mAh	279mAh
Battery life	Regular: up to 18hrs	Regular: up to 18hrs
Charging type	Charging dock	Charging dock
Charging time	1-2 hours	1-2 hours
Solar power	No	No
PLATFORM	PLATFORM	PLATFORM
Chipset	Apple S3	Apple S3
CPU	Dual core	Dual core
GPU	—	—
Operating system	WatchOS 4	WatchOS 4
MISC	MISC	MISC
Companion app	Apple Watch App	Apple Watch App
Compatibility	iOS 12.0+	iOS 12.0+
Payment system	Apple Pay	Apple Pay
Interchangeable strap	22 mm, Yes	24mm, Yes
Voice command	Yes, Siri	Yes, Siri
Find my phone	Yes	Yes
Box content	Apple Watch Series 3, Charger, Manual, Straps	Apple Watch Series 3, Charger, Manual, Straps
Price