Garmin Forerunner 45S vs. Garmin fēnix 7S Solar

Smartwatch Comparison, Reviews and Tests

Side by side comparison and review of Garmin Forerunner 45S and Garmin fēnix 7S Solar. 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. Garmin fēnix 7S Solar Comparison Chart
GENERAL Garmin Forerunner 45S Garmin fēnix 7S Solar
Product Type Sport watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
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: 63 g
Case only: 47 g
Body Material - Stainless steel, fibre-reinforced polymer
Protection Waterproof Water-resistant
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Garmin fēnix 7S Solar
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, solar charging, 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 45S Garmin fēnix 7S Solar
Wireless Interface Bluetooth, ANT+ Bluetooth, Wi-Fi, ANT+
DISPLAY Garmin Forerunner 45S Garmin fēnix 7S Solar
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 45S Garmin fēnix 7S Solar
Type - Touch sensitive screen, push buttons
CASE Garmin Forerunner 45S Garmin fēnix 7S Solar
Case Size - 42 mm
Case Shape Round Round
Bezel - Stainless steel
Case Back - Metal
Case Details White | Iris | Black Rose gold | Slate grey
BAND Garmin Forerunner 45S Garmin fēnix 7S Solar
Band Type Band Band
Band Size S -
Band Width - 20 mm
Fits Wrist with Circumference 124-185 mm 108-182 mm
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour White | Iris | Black Light sand | Black
STORAGE Garmin Forerunner 45S Garmin fēnix 7S Solar
Storage Capacity - 16 GB
BATTERY Garmin Forerunner 45S Garmin fēnix 7S Solar
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
Smartwatch mode (with solar) - up to 14 days
Battery Saver Watch Mode - up to 38 days
Battery Saver Watch Mode (with solar) - up to 87 days
GPS mode - up to 37 hour(s)
GPS mode (with solar) - up to 46 hour(s)
All satellite systems mode - up to 26 hours
All satellite systems mode (with solar) - up to 30 hours
All satellite systems with music mode - up to 7 hour(s)
Max Battery GPS Mode - up to 90 hour(s)
Max Battery GPS Mode (with solar) - up to 162 hour(s)
Expedition GPS Mode - up to 26 days
Expedition GPS Mode (with solar) - up to 43 days
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45S Garmin fēnix 7S Solar
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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