Garmin Forerunner 45 vs. Garmin fenix 5X

Smartwatch Comparison, Reviews and Tests

Side by side comparison and review of Garmin Forerunner 45 and Garmin fenix 5X. 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 45 vs. Garmin fenix 5X Comparison Chart
GENERAL Garmin Forerunner 45 Garmin fenix 5X
Product Type Smart watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
Wearing Style Watch style Watch style
Width 42 mm -
Height 42 mm -
Depth 11.4 mm -
Weight 36 g -
Body Details - With band: 98 mm
Body Material - Stainless steel, fibreglass reinforced polymer
Protection Waterproof Waterproof
Clock Display Yes Yes
FEATURES Garmin Forerunner 45 Garmin fenix 5X
Sensors Accelerometer, heart rate Accelerometer, digital compass, thermometre, gyro sensor, barometric altimeter, optical heart sensor
Tracking Data Distance, time, speed, calories burned, sleep activity, heart rate, stress level Distance, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, pace, stress level, temperature
Goal Setting Yes Yes
Features Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device Find phone function, VO2 max, call alerts, Bluetooth Smart technology, automatic exercise recognition, VIRB control, Move IQ, Find my Device, store & play music, sunrise/sunset times, LiveTrack, auto lap, Physio TrueUp, weather information
Notifications Calendar, Email, social apps Calendar, SMS, Email
Vibrating Alert Yes Yes
Feedback Type - Vibration alert, visual interface
Navigation (GPS) - GPS/GLONASS/Galileo receiver
CONNECTIVITY Garmin Forerunner 45 Garmin fenix 5X
Wireless Interface Bluetooth, ANT+ Bluetooth, ANT+/ANT
DISPLAY Garmin Forerunner 45 Garmin fenix 5X
Type Memory-in-Pixel LCD - colour - transflective Memory-in-Pixel LCD - colour - transflective
Resolution 208 x 208 pixels 240 x 240 pixels
Screen Size 1.04" 1.2"
Screen Protection - Sapphire glass
INPUT DEVICE Garmin Forerunner 45 Garmin fenix 5X
Type - Touch sensitive screen
CASE Garmin Forerunner 45 Garmin fenix 5X
Case Size - 51 mm
Crystal Type - Domed sapphire crystal
Case Shape Round Round
Bezel - Stainless steel
Case Details Black Slate grey
BAND Garmin Forerunner 45 Garmin fenix 5X
Band Type Band Band
Band Size L -
Band Width - 26 mm
Fits Wrist with Circumference 129-197 mm -
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour Black | Lava red Black
STORAGE Garmin Forerunner 45 Garmin fenix 5X
Storage Capacity - 12 GB
BATTERY Garmin Forerunner 45 Garmin fenix 5X
Technology - Lithium Ion
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
GPS mode - up to 20 hour(s)
UltraTrac mode - up to 35 hour(s)
Smartwatch mode - up to 12 days
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45 Garmin fenix 5X
Included Accessories Charging/data cable Charging cable
Max Depth of Water Resistance 50 m 100 m
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