In depth comparison and review of Garmin Forerunner 745 and Amazfit GTS 4. 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 | Garmin Forerunner 745 | Amazfit GTS 4 |
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Product Type | Sport watch | Smart watch |
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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 |
Audio Output | - | Speaker |
Width | 43.8 mm | 36.5 mm |
Height | 43.8 mm | 42.7 mm |
Depth | 13.3 mm | 9.9 mm |
Weight | 47 g | 27 g |
Body Material | Fibre-reinforced polymer | Stainless steel, aluminium alloy frame |
Protection | Water-resistant | Water-resistant |
Clock Display | Yes | Yes |
FEATURES | Garmin Forerunner 745 | Amazfit GTS 4 |
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Sensors | Accelerometer, digital compass, thermometre, gyro sensor, heart rate, barometric altimeter, Pulse Ox sensor | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
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Tracking Data | Distance, time, calories burned, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, menstrual cycle, temperature, hydration, recovery time, training load | Time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), recovery time, training load, sleep quality score, nap, sleep breathing quality |
Modes | - | 154 sports modes |
Goal Setting | Yes | Yes |
Features | Find phone function, VO2 max, HR zones, VIRB control, Move IQ, Garmin Connect compatible, Find my Device, store & play music, rejecting a call, Garmin Elevate, LiveTrack, TrueUp, Body Battery, auto lap, Physio TrueUp, music playback control, weather information | Strength training guidance, camera remote control, find phone function, answering a call, VO2 max, making a call, Find my Device, breathing training function, store & play music, sunrise/sunset times, auto pause, auto lap, realtime location tracking, music playback control, weather information, instant message reply, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
Notifications | Calendar, SMS, Email, social apps, incoming calls | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
Vibrating Alert | Yes | Yes |
Feedback Type | Vibration alert, visual interface | Audio alert, vibration alert, visual interface |
Navigation (GPS) | GPS/GLONASS/Galileo receiver | - |
Payment Technology | Garmin Pay | - |
Internet of Things (IoT) Compatible | - | Yes |
IoT Intelligent Assistant | - | Alexa built-in |
IoT Voice Controlled | - | Direct |
CONNECTIVITY | Garmin Forerunner 745 | Amazfit GTS 4 |
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Wireless Interface | Bluetooth, Wi-Fi, NFC, ANT+ | Wi-Fi, Bluetooth 5.0 |
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DISPLAY | Garmin Forerunner 745 | Amazfit GTS 4 |
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Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
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Resolution | 240 x 240 pixels | 390 x 450 pixels |
Screen Size | 1.2" | 1.75" |
Pixel Density | - | 341 ppi |
Screen Protection | Corning Gorilla Glass DX (scratch resistant glass) | Tempered glass |
Always On Display (AOD) | - | Yes |
INPUT DEVICE | Garmin Forerunner 745 | Amazfit GTS 4 |
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Type | Touch sensitive screen | Touch sensitive screen, push button |
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CASE | Garmin Forerunner 745 | Amazfit GTS 4 |
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Case Shape | Round | Rectangular |
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Bezel | Fibre-reinforced polymer | - |
Case Details | Black | Neo tropic | Aluminium alloy |
BAND | Garmin Forerunner 745 | Amazfit GTS 4 |
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Band Type | Band | Strap |
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Band Width | 22 mm | 20 mm |
Fits Wrist with Circumference | 126-216 mm | 140-200 mm |
Changeable | Yes | Yes |
Clasp Type | Buckle | Pin buckle |
Band Material | Silicone | Fluoroelastomer |
Band Colour | Black | Infinite black | Misty white | Rosebud pink |
STORAGE | Garmin Forerunner 745 | Amazfit GTS 4 |
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User Memory | - | 2.3 GB |
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BATTERY | Garmin Forerunner 745 | Amazfit GTS 4 |
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Technology | Lithium Ion | - |
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Capacity | - | 300 mAh |
Battery Life | 7 day(s) | - |
Battery Life Details | Smartwatch mode - up to 7 days GPS mode - up to 16 hour(s) GPS with Music mode - up to 6 hour(s) UltraTrac mode - up to 21 hour(s) |
Typical usage - up to 8 days Battery Saver Watch Mode - up to 16 days Clock - up to 30 days Heavy usage - up to 4 days Accurate mode (with GPS) - up to 16 hours GPS mode - up to 28 hours Power saving mode (with GPS) - up to 33 hours |
Rechargeable Battery | - | Yes |
Recharge Time | - | 2 hour(s) |
MISCELLANEOUS | Garmin Forerunner 745 | Amazfit GTS 4 |
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Included Accessories | USB cable | Magnetic charging cable |
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Preloaded Software | Garmin Pay, Garmion Connect IQ | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
Max Depth of Water Resistance | 50 m | 50 m |
Max Operating Temperature | 60 °C | 45 °C |
Min Operating Temperature | -20 °C | 0 °C |
Warranty | 1-year warranty | 1-year warranty |