apple watch series 4 vs apple watch series 3

Apple Watch Series 4 vs Series 3 – What’s New?

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Last Updated on March 31, 2020 by Jude Simeone


The Apple watch series 4 is here with so many upgrades and additional features. We pitch it head-to-head with its predecessor, the series 3 what are the latest additions, is an upgrade really necessary and is it really worth your money. We looking at what sets the series 4 apart from the series 3.

Apple watch series 4 vs Apple watch series 3 Specs Compared

Apple Watch Series 4Apple watch series 3
apple watch series 4 vsapple watch series 3


4.7 out of 5 stars (4.7 / 5)
3 out of 5 stars (3.0 / 5)
Fitness tracking:
4.7 out of 5 stars (4.7 / 5)
4.5 out of 5 stars (4.5 / 5)
4 out of 5 stars (4.0 / 5)
4.2 out of 5 stars (4.2 / 5)
4.5 out of 5 stars (4.5 / 5)
3 out of 5 stars (3.0 / 5)
Fitness tracking:
4.6 out of 5 stars (4.6 / 5)
4.5 out of 5 stars (4.5 / 5)
4 out of 5 stars (4.0 / 5)
4.1 out of 5 stars (4.1 / 5)


Check @ Amazon Check @ Amazon


Device nameApple Watch Series 4
Apple Watch Series 3
Device typeSport/Fitness smartwatchSport/Fitness smartwatch
PredessesorApple watch series 3Apple Watch Series 2
SuccessorApple Watch Series 5 (44mm)Apple Watch Series 4
Released dateSeptember, 2018September, 2017
Ideal forUnisexUnisex


Display size1.78 inches (44mm)1.65 inches (42mm)
Display resolution448 x 368 pixels (44mm)
324 x 394 pixels (40mm)
390 x 312 pixels (42mm)
Pixel density----
Input typeTouchscreen
a button and a
digital crown
a button and a
digital crown
Customizable watch faceYesYes


Dimension44 x 38 x 10.7 mm (44mm)
40 x 38 x 10.7 mm (40mm)
42.5 x 36.4 x 11.4 mm
38 x 36.4 x 11.4 mm
Weight48 grams (44mm)52.8 grams (42m)
Casing materialStainless steel frame
All ceramic/
sapphire crystal back
Aluminum (GPS)
Stainless steel
Strap/band materialElastomerElastomer
Bezel MaterialCeramicsCeramics
Strap size125 - 210mm125 - 210mm
Interchangeable band YesYes
Screen protectionSapphire crystal glassSapphire crystal glass
Water resistant/ProtectionYes, IP68, 5ATMYes, IP68, 5ATM
Swim-proofYes, recommendedYes, recommended
Color(s)Black, silver, goldBlack, silver, white


Internal storage16GB8GB
Memory card slotNoNo


BluetoothBluetooth v5.0Bluetooth v4.2
Bluetooth callingYesYes




Email alertYesYes
SMS alertYesYes
Calls alertYesYes
Event reminderYesYes
Third-party appsYesYes


Sleep apneaNoNo
Sleep trackingYes (Third-party app)Yes (Third-party app)
Floors climbedYesYes
Heart rate monitoringYesYes
VO2 Max.YesYes
Blood oxygenNoNo
Blood pressureNoNo
Menstrual cycle trackingNoNo
Swim trackingYesYes
Under-water heart rate trackingNoNo
Preloaded mapsYesYes
On-screen workout modesNoNo
Triathlon modeYesYes
ECG TrackingNoNo
Preloaded sport modesYesYes
Safety trackingYesYes


Music streamingYesYes
Bluetooth musicYesYes


Heart rate monitor (HRM)YesYes
Gyroscope YesYes
Ambient lightYesYes
Pulse OximeterNoNo
ThermometerYes, (App)Yes, (App)
Other sensors____


Operating system (OS)WatchOS 5.0WatchOS 5.0
ChipsetApple S4, 64bitApple S3
CPUDual coreDual core


Type of batteryNon-removable Li-ion batteryNon-removable Li-ion battery
Battery capacity --279mAh
Battery lifeStandby :2 days + , Mixed usage: 1 day+Standby :3 days+ , Mixed usage: 18hrs+
Charging typeMagnetic chargingMagnetic charging
Charging timeAbout 1-2 hoursAbout 1-2 hours
Battery saver modeYes__
Solar powerNoNo
Rapid charging__




Control cameraYesYes
Music controlYesYes
Find phoneYesYes
Text responseYesYes


Payment systemApple PayApple Pay
Compatibility iPhone 5s+
iOS 12+
iPhone 5s+
iOS 12+
Companion appApple watch APPApple watch APP
Voice commandYesYes


Apple Watch Series 4Apple Watch Series 3
Magnetic charging cable + USB adapterMagnetic charging cable + USB adapter
Quick start guideQuick start guide
NOTE: We can't guarantee that all the information on this table are 100% correct. Read full disclaimer. Please, report an error.

Apple Watch Series 4 vs Series 3 – The Differences

Features Compared
  1. Design
  2. The differences between the series 4 and 3 comes majorly in the design plus additional and improved sensors. No doubt the series 4 has a more appealing , elegant and beast-like design which commands respect and class. The case material are almost the same except that the series 4 has a more durable all ceramics and sapphire crystal back while the series 3 has a composite back(center).

    The series 4 has fine finishes and extended curved areas which makes the screen size bigger with 1.78 inches while the series 3 is 1.68 inches. So obviously you see more at a glance with the series 4.

    The series 4 and 3 both come with an OLED Retina display that features a bright and high-quality display, but the series 4 comes with additional LTPO technology which the company says will improve battery efficiency which will let you go longer on a single charge.

    It’s worthy to note that the series 4 weighs far less than the series 3, despite the fact that the later is bigger, has more features. The series 4 is surprisingly thinner with 10.7mm thickness size while the series 3 is 11.4mm thick.

    In previous versions of the Apple watch series, they always come in 42mm and 38mm case sizes respectively, but that has been abandoned as the new series 4 comes in a bigger 44mm and 40mm case sizes respectively due to the increased size.

    The digital crown found in series 3 is also here in the series 4, but this time with haptic feedback which delivers a precise click-like feel as you scroll.

  3. Platform and Connectivity
  4. The new Apple watch series 4 runs on Apple watch OS version 5.0 while the series 3 runs on version 4.0 but its upgradable to version 5.0. Secondly the series 4 is powered by a stronger S4 dual-core processor with W3 Apple wireless chip which the company says is 2x faster than the S3 dual-core processor and W2 in the series 3.

    Beside this ,the series 4 comes with a newer version of Bluetooth v5.0 compared to the v4.2 both LE found in the series 3 which means a more faster connectivity on the series 4.

  5. Media
  6. With the series 3, we had 8GB storage space while in the series 4 it is 2x, 16GB storage space, quite massive. With this, you can store all your favorite tracks, videos, and other files. The RAM size of the series 4 is not yet confirmed, but we stipulate that it won’t be lower than the 768MB RAM size that obviously powers the series 3.

  7. Sensors
  8. The Apple watch series 4 has a new ECG sensor that lets you take ECG reading simply by pressing the digital crown for about 30 seconds, it then stores the recorded ECG report in the Health app which you can download as PDF and share with your doctor

    Beside this , you will find every other sensor on the series 3 on the series 4, but with the series 4 there is an improved accelerometer, gyroscope, second-generation heart rate sensor all upgraded and obviously more smarter and accurate stats from your fitness activities.

    The accelerometer is capable of detecting accidental falls the watch will display a message that makes it easy to call emergency services, however, if you are unresponsive for about 60 seconds the device will make a call and also sends a message to your designated emergency contact. This feature is set by default for older people 65 years and above while it can be enabled manually for ages lower than 65.

    The new second-generation optical heart rate sensor is also capable of detecting irregular heart rhythms such as unusual low heart rate and warn you about it. This feature and like that of the ECG will come in a later software update on the series 4.

  9. Battery
  10. There is no much difference on the battery life, its still same li-ion battery type, couldn’t find the capacity, but Apple says that on average you should expect about 18 hours battery life on the series 4 just same as series 3, but with the minute detailed advancement in technology that comes with the series 4 perhaps you should expect additional 1-4 hours extended battery life.

  11. Price

Obviously the price of the Apple watch series 4 will be more than the series 3. Though the discrepancy won’t be much. The aluminum casing are cheaper than the stainless steel casing ranging from $300 to $400, while the aluminum or stainless steel versions with cellular functionality are more costlier and the price ranges from about $500 to $700 respectively.

At a Glance Apple Series 4 vs Series 3


I think the features built into the series 4 is quiet massive, it is a great smartwatch same as the series 3, but more comprehensive and will definitely more fulfilling. Perhaps you might already own a series 3 and wondering if you should get the series 4, well it all depends on your preference and lifestyle. If you want a more classic smartwatch and smarter fitness tracker, an upgrade is the way to go otherwise continue to enjoy your series 3.


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