Compare Apple Watch models

Series 4 GPS Buy NowSeries 3 GPS Buy Now
Apple Watch Series 4Apple Watch Series 3

Summary

44mm case40mm case42mm case38mm case
Apple Watch Series 4 caseApple Watch Series 4 caseApple Watch Series 3 caseApple Watch Series 3 case
977 sq mm
display area
759 sq mm
display area
740 sq mm
display area
563 sq mm
display area
44mm case40mm case
Apple Watch Series 4 caseApple Watch Series 3 case
977 sq mm
display area
740 sq mm
display area
40mm case38mm case
Apple Watch Series 4 caseApple Watch Series 3 case
759 sq mm
display area
563 sq mm
display area
Apple Watch Series 4 Sideview IconApple Watch Series 3 Sideview Icon
10.7mm thin11.4mm thin
Apple Watch Series 4 ChipApple Watch Series 3 Chip
64-bit dual-core S4 processor Up to 2x faster than S3 processorDual-core S3 processor
Electrical Heart SensorNot Featured
Electrical heart sensor
Second-Generation Optical Heart SensorOptical Heart Sensor
Second-generation optical
heart sensor
Optical heart sensor
Fall detectionNot featured
Fall Detection
Digital Crown with Haptic FeedbackDigital Crown
Digital Crown with
haptic feedback
Digital Crown

Finishes

Apple Watch Series 4Apple Watch Series 3
AluminiumAluminium
Apple Watch Series 4 ColorsApple Watch Series 3 Colors
AluminiumAluminium
Apple Watch Series 4 ColorsApple Watch Series 3 Colors
Apple Watch Nike+ available in silver and space grey aluminium.Apple Watch Nike+ available in space grey aluminium.

Features

GPS, GLONASS, Galileo and QZSS
Barometric altimeter
Water resistant
50 metres1
Electrical heart sensor
Optical heart sensor
Improved accelerometer
up to 32 G-forces
Improved gyroscope
Ambient light sensor
Capacity 16GB
All ceramic and sapphire crystal back
GPS, GLONASS, Galileo and QZSS
Barometric altimeter
Water resistant
50 metres1
Optical heart sensor
Accelerometer
up to 16 G-forces
Gyroscope
Ambient light sensor
Capacity 8GB
Composite back (centre)

Display

44mm 368x448 pixels 977 sq mm display area42mm 312x390 pixels 740 sq mm display area
40mm 324x394 pixels 759 sq mm display area38mm 272x340 pixels 563 sq mm display area
LTPO OLED Retina display with Force Touch 1,000 nits brightnessOLED Retina display with Force Touch 1,000 nits brightness

Chip

S4 with 64-bit dual-core processor Up to 2x faster processorS3 with dual-core processor
W3 Apple wireless chipW2 Apple wireless chip

Connectivity

Wi-Fi (802.11b/g/n 2.4GHz)Wi-Fi (802.11b/g/n 2.4GHz)
Bluetooth 5.0Bluetooth 4.2

Power

Built-in rechargeable lithium-ion battery Up to 18 hours2Built-in rechargeable lithium-ion battery Up to 18 hours3
Magnetic charging cableMagnetic charging cable
USB power adapter