Side by side comparison and review of Apple Watch Series 3 (GPS + Cellular) and Apple Watch Series 6 (GPS + Cellular). Compare design, displays, functions, batteries and other key specifications and features to simplify the choice of your perfect smartwatch. Our goal is to make it easier for you to decide on the watch that will best meet your expectations by revealing the main differences between the products.
| GENERAL | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| 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 | 28.7 g | - |
| Body Details | - | Case only: 39.7 g |
| Body Material | Anodised aluminium | Stainless steel |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| 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 | Call handling, music remote handling, camera remote control, listening to music, Retina Display technology, text messages handling | Music remote handling, ECG accurate heart rate, camera remote control, Retina Display technology, Fall detection, Emergency SOS, irregular beat alerts, Family Setup support |
| 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/GLONASS/Galileo/QZSS receiver | GPS/GNSS receiver |
| Payment Technology | - | Apple Pay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | Siri | Siri |
| IoT Voice Controlled | - | Direct |
| CELLULAR | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) |
|---|---|---|
| Mobile Broadband Generation | 4G | 4G |
| SIM Card Type | Electronic SIM card (e-SIM) | Electronic SIM card (e-SIM) |
| Messaging Services | SMS | - |
| Supported Mobile Messaging Services | SMS | - |
| CONNECTIVITY | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Wireless Interface | IEEE 802.11b/g/n, Bluetooth 4.2 | IEEE 802.11b/g/n, Bluetooth 5.0 |
|---|
| DISPLAY | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Type | OLED - colour | LTPO OLED - colour |
|---|---|---|
| Resolution | 272 x 340 pixels | 324 x 394 pixels |
| Screen Protection | Ion-X glass | Sapphire glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Type | Touch sensitive screen (Force Touch) | Touch sensitive screen |
|---|
| CASE | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Case Size | 38 mm | 40 mm |
|---|---|---|
| Case Shape | - | Rectangular |
| Case Back | Ceramic back | Sapphire crystal and ceramic back |
| Case Details | Silver aluminium | Space grey aluminium | Gold aluminium | Stainless steel | Space black stainless steel | Gold stainless steel | Blue aluminium | Silver stainless steel | Graphite stainless steel | Gold aluminium | Space grey aluminium | Red aluminium | Silver aluminium |
| Crown Type | Digital | Digital with haptic feedback |
| BAND | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| 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 | White | Black | Fog | Pink sand | Seashell | Dark olive | Soft white | Grey | Space black | Deep navy | White | Black | Pink sand | Cyprus green | Red | Black Unity | Silver | Graphite | Gold | Garnet |
| STORAGE | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Storage Capacity | 16 GB | 32 GB |
|---|
| CPU | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Manufacturer | Apple | Apple |
|---|---|---|
| CPU Type | S3 | S6 |
| Features | W2 Apple wireless chip | W3 Apple wireless chip, U1 chip |
| BATTERY | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Technology | Lithium Ion | Lithium Ion |
|---|---|---|
| Battery Life | 18 hours | 18 hours |
| Rechargeable Battery | - | Yes |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Apple Watch Series 3 (GPS + Cellular) | Apple Watch Series 6 (GPS + Cellular) |
|---|
| Included Accessories | Power adapter, magnetic charging cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Siri | Apple Pay, GymKit |
| SAR Value | 0.14 W/kg (head), 0.15 W/kg (limb) | 0.29 W/kg (head), 0.31 W/kg (limb) |
| Max Depth of Water Resistance | 50 m | 50 m |
| Manufacturer Model Number | - | A2375 |
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