In depth comparison and review of Apple Watch Series 3 (GPS) and Apple Watch Series 6 (GPS). Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | WatchOS 5 | WatchOS 7 |
| Supported Host Device OS | iOS 11 or later | iOS 14 or later |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | Microphone |
| Audio Output | Speaker | Speaker |
| Width | 33.3 mm | - |
| Height | 38.6 mm | - |
| Depth | 11.4 mm | - |
| Weight | 26.7 g | - |
| Body Details | - | Case only: 30.5 g |
| Body Material | Anodised aluminium | Aerospace-grade aluminium alloy |
| Protection | Water-resistant | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Sensors | Accelerometer, ambient light sensor, gyro sensor, heart rate, barometric altimeter | Accelerometer, ambient light sensor, digital compass, gyro sensor, barometric altimeter, optical heart sensor, electrical heart sensor, blood oxygen sensor |
|---|---|---|
| Tracking Data | Distance, time, calories burned, activity, heart rate, steps taken | Distance, time, calories burned, activity, sleep activity, heart rate, blood oxygen saturation, ECG |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, camera remote control, listening to music, Retina Display technology, call alerts | Music remote handling, ECG accurate heart rate, camera remote control, Retina Display technology, Fall detection, Emergency SOS, irregular beat alerts |
| Notifications | Calendar, SMS, Email | Calendar |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Audio alert, vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/GNSS receiver | GPS/GNSS receiver |
| Payment Technology | - | Apple Pay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | Siri | Siri |
| IoT Voice Controlled | Direct | Direct |
| CONNECTIVITY | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Wireless Interface | IEEE 802.11b/g/n, Bluetooth 4.2 | IEEE 802.11b/g/n, Bluetooth 5.0 |
|---|
| DISPLAY | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Type | OLED - colour | LTPO OLED - colour |
|---|---|---|
| Resolution | 272 x 340 pixels | 324 x 394 pixels |
| Screen Protection | Ion-X glass | Ion-X glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Type | Touch sensitive screen (Force Touch) | Touch sensitive screen |
|---|
| CASE | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Case Size | 38 mm | 40 mm |
|---|---|---|
| Case Shape | - | Rectangular |
| Case Back | Composite back | Sapphire crystal and ceramic back |
| Case Details | Space grey aluminium | Silver aluminium | Gold aluminium | Red aluminium | Silver aluminium | Gold aluminium | Space grey aluminium | Blue aluminium |
| Crown Type | Digital | Digital with haptic feedback |
| BAND | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Band Type | Sport band | Sport band |
|---|---|---|
| Band Size | - | S/M/L |
| Fits Wrist with Circumference | 130-200 mm | 130-200 mm |
| Changeable | - | Yes |
| Clasp Type | Pin-and-tuck | Pin-and-tuck |
| Band Material | Fluoroelastomer | Fluoroelastomer |
| Band Colour | Black | White | Fog | Pink sand | Grey | Red | White | Pink sand | Black | Deep navy | Black Unity |
| STORAGE | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Storage Capacity | 8 GB | 32 GB |
|---|
| CPU | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Manufacturer | Apple | Apple |
|---|---|---|
| CPU Type | S3 | S6 |
| Features | W2 Apple wireless chip | W3 Apple wireless chip, U1 chip |
| BATTERY | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Technology | Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Life | 18 hours | 18 hours |
| Rechargeable Battery | - | Yes |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Apple Watch Series 3 (GPS) | Apple Watch Series 6 (GPS) |
|---|
| Included Accessories | Power adapter, magnetic charging cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | - | Apple Pay, GymKit |
| SAR Value | - | 0.14 W/kg (head), 0.04 W/kg (limb) |
| Max Depth of Water Resistance | 50 m | 50 m |
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