Garmin Forerunner 45S vs. Amazfit GTR Mini

Smartwatch Comparison, Reviews and Tests

Side by side comparison and review of Garmin Forerunner 45S and Amazfit GTR Mini. 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.

Smartwatch Specifications Comparison

Garmin Forerunner 45S vs. Amazfit GTR Mini Comparison Chart
GENERAL Garmin Forerunner 45S Amazfit GTR Mini
Product Type Sport watch Smart watch
Operating System - Zepp OS 2.0
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
Width 39.5 mm -
Height 39.5 mm -
Depth 11.4 mm -
Weight 32 g -
Body Details - With band: 24.6 g
Body Material - Plastic, stainless steel
Protection Waterproof Water-resistant
Colours - Midnight black | Misty pink | Ocean blue
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Amazfit GTR Mini
Sensors Accelerometer, heart rate Accelerometer, ambient light sensor, geomagnetic sensor, BioTracker PPG biological tracking optical sensor
Tracking Data Distance, time, speed, calories burned, sleep activity, heart rate, stress level Calories burned, activity, heart rate, steps taken, blood oxygen saturation, pace, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), sleep duration, altitude, recovery time, training load, training effect, REM phases, sleep quality score, nap, sleep breathing quality
Modes - Do-not-disturb mode, 126 sport modes
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, VO2 max, OTA update, breathing training function, music playback control, weather information, event reminders, rotor motor, Quick Reply, pomodoro timer, customisable watch faces, PeakBeats workout status algorithm, ExerSense algorithm, SomnusCare, password protection, Virtual Pacer, sedentary lifestyle reminder, circularly-polarised GPS aerial, 5 satellite positioning systems
Notifications Calendar, Email, social apps Calendar, 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
Navigation (GPS) - GPS receiver
CONNECTIVITY Garmin Forerunner 45S Amazfit GTR Mini
Wireless Interface Bluetooth, ANT+ Bluetooth 5.2
DISPLAY Garmin Forerunner 45S Amazfit GTR Mini
Type Memory-in-Pixel LCD - colour - transflective AMOLED - colour
Resolution 208 x 208 pixels 416 x 416 pixels
Screen Size 1.04" 1.28"
Pixel Density - 326 ppi
Screen Protection - Fingerprint-resistant coating, tempered glass
Always On Display (AOD) - Yes
INPUT DEVICE Garmin Forerunner 45S Amazfit GTR Mini
Type - Touch sensitive screen, side button
CASE Garmin Forerunner 45S Amazfit GTR Mini
Case Shape Round Circular
Case Details White | Iris | Black -
BAND Garmin Forerunner 45S Amazfit GTR Mini
Band Type Band Strap
Band Size S -
Band Width - 20 mm
Fits Wrist with Circumference 124-185 mm 150-200 mm
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour White | Iris | Black -
CPU Garmin Forerunner 45S Amazfit GTR Mini
CPU Type - Huangshan 2S
BATTERY Garmin Forerunner 45S Amazfit GTR Mini
Capacity - 280 mAh
Battery Life - 14 day(s)
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Typical usage - up to 14 days
Heavy usage - up to 7 days
Battery saver mode - up to 20 days
Watch mode - up to 30 days
GPS mode - up to 25 hour(s)
Rechargeable Battery - Yes
Recharge Time - 2 hour(s)
MISCELLANEOUS Garmin Forerunner 45S Amazfit GTR Mini
Included Accessories Charging/data cable Magnetic charging cable
Preloaded Software - Games, Stopwatch, Alarm Clock, Timer
Compliant Standards - ISO 22810
Max Depth of Water Resistance 50 m 50 m
Warranty - 1-year warranty
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