Garmin Forerunner 45 vs. Garmin fēnix 7S

Smartwatch Comparison, Reviews and Tests

Detailed comparison and review of Garmin Forerunner 45 and Garmin fēnix 7S. With our comprehensive overview, you can simply compare size, design, functions, battery capacities, but also other key features of both smartwatches and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the watch that best fits your needs and expectations.

Smartwatch Specifications Comparison

Garmin Forerunner 45 vs. Garmin fēnix 7S Comparison Chart
GENERAL Garmin Forerunner 45 Garmin fēnix 7S
Product Type Smart watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
Activity/Sport - Multisport
Wearing Style Watch style Watch style
Width 42 mm -
Height 42 mm -
Depth 11.4 mm -
Weight 36 g -
Body Details - With band: 63 g
Case only: 47 g
Body Material - Stainless steel, fibre-reinforced polymer
Protection Waterproof Water-resistant
Clock Display Yes Yes
FEATURES Garmin Forerunner 45 Garmin fēnix 7S
Sensors Accelerometer, heart rate Accelerometer, thermometre, gyro sensor, barometric altimeter, electromagnetic compass, optical heart sensor, Pulse Ox sensor
Tracking Data Distance, time, speed, calories burned, sleep activity, heart rate, stress level Distance, speed, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, pace, stress level, respiratory rate, active time, water balance, temperature
Goal Setting Yes Yes
Features Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device Music remote handling, find phone function, VIRB control, inactivity alert, Move IQ, Find my Device, Downloadable workouts, store & play music, rejecting a call, LiveTrack, Physio TrueUp, PacePro pace guidance, animated workouts, weather information, dual grid coordinates format, Body Battery Energy Monitor
Notifications Calendar, Email, social apps Calendar, SMS, Email, social apps, incoming calls, high and low heart rate
Vibrating Alert Yes Yes
Feedback Type - Audio alert, vibration alert, visual interface
Navigation (GPS) - GPS/GLONASS/Galileo receiver
Payment Technology - Garmin Pay
CONNECTIVITY Garmin Forerunner 45 Garmin fēnix 7S
Wireless Interface Bluetooth, ANT+ Bluetooth, Wi-Fi, ANT+
DISPLAY Garmin Forerunner 45 Garmin fēnix 7S
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 - Corning Gorilla Glass DX (scratch resistant glass)
INPUT DEVICE Garmin Forerunner 45 Garmin fēnix 7S
Type - Touch sensitive screen, push buttons
CASE Garmin Forerunner 45 Garmin fēnix 7S
Case Size - 42 mm
Case Shape Round Round
Bezel - Stainless steel
Case Back - Metal
Case Details Black Silver
BAND Garmin Forerunner 45 Garmin fēnix 7S
Band Type Band Band
Band Size L -
Band Width - 20 mm
Fits Wrist with Circumference 129-197 mm 108-182 mm
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour Black | Lava red Graphite | Whitestone
STORAGE Garmin Forerunner 45 Garmin fēnix 7S
Storage Capacity - 16 GB
BATTERY Garmin Forerunner 45 Garmin fēnix 7S
Technology - Lithium Ion
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Smartwatch mode - up to 11 days
Battery Saver Watch Mode - up to 38 days
GPS mode - up to 37 hour(s)
All satellite systems mode - up to 26 hours
All satellite systems with music mode - up to 7 hour(s)
Max Battery GPS Mode - up to 90 hour(s)
Expedition GPS Mode - up to 26 days
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45 Garmin fēnix 7S
Included Accessories Charging/data cable Charging/data cable
SAR Value - 0.32 W/kg (body), 0.32 W/kg (limb)
Max Depth of Water Resistance 50 m 100 m
Max Operating Temperature - 45 °C
Min Operating Temperature - -20 °C
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