Side by side comparison and review of Garmin Forerunner 45S and Amazfit GTS 3. 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 | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS, Android | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Width | 39.5 mm | - |
| Height | 39.5 mm | - |
| Depth | 11.4 mm | - |
| Weight | 32 g | - |
| Body Details | - | Case only: 24.4 g |
| Body Material | - | Aluminium alloy |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Sensors | Accelerometer, heart rate | Accelerometer, ambient light sensor, gyro sensor, geomagnetic sensor, barometric altimeter, temperature, BioTracker PPG 3.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, sleep activity, heart rate, stress level | Distance, calories burned, sleep activity, heart rate, steps taken, blood oxygen saturation, stress level |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device | Camera remote control, find phone function, automatic exercise recognition, weather information, PAI Health Assessment System |
| Notifications | Calendar, Email, social apps | Calendar |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa |
| CONNECTIVITY | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Wireless Interface | Bluetooth, ANT+ | Bluetooth 5.1 |
|---|
| DISPLAY | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 390 x 450 pixels |
| Screen Size | 1.04" | 1.75" |
| Pixel Density | - | 341 ppi |
| Screen Protection | - | Tempered glass |
| INPUT DEVICE | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Type | - | Touch sensitive screen |
|---|
| CASE | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Case Shape | Round | Rectangular |
|---|---|---|
| Case Details | White | Iris | Black | - |
| Crown Type | - | Classic crown |
| BAND | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | S | - |
| Band Width | - | 20 mm |
| Fits Wrist with Circumference | 124-185 mm | 155-218 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | White | Iris | Black | Graphite black | Ivory white | Pink earth |
| BATTERY | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Capacity | - | 250 mAh |
|---|---|---|
| Battery Life Details | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
Battery safe mode - up to 20 days Heavy usage - up to 6 days Typical usage - up to 12 days GPS mode - up to 20 hour(s) |
| Rechargeable Battery | - | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Garmin Forerunner 45S | Amazfit GTS 3 |
|---|
| Included Accessories | Charging/data cable | Magnetic charging stand |
|---|---|---|
| Preloaded Software | - | Zepp App |
| Max Depth of Water Resistance | 50 m | 50 m |
| Warranty | - | 2-year warranty |
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