Garmin Forerunner 45S vs. Garmin fēnix 6S Solar

Smartwatch Comparison, Reviews and Tests

Side by side comparison and review of Garmin Forerunner 45S and Garmin fēnix 6S 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 6S Solar Comparison Chart
GENERAL Garmin Forerunner 45S Garmin fēnix 6S Solar
Product Type Sport watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
Activity/Sport - Running, swimming, ski, cycling, hiking, climbing, snowboarding, rower, kayaking, jumpmaster, stand up paddleboarding
Wearing Style Watch style Watch style
Width 39.5 mm 42 mm
Height 39.5 mm 42 mm
Depth 11.4 mm 14.2 mm
Weight 32 g 60 g
Body Material - Stainless steel, fibre-reinforced polymer
Protection Waterproof Water-resistant
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Garmin fēnix 6S Solar
Sensors Accelerometer, heart rate Accelerometer, thermometre, barometric altimeter, electromagnetic compass, pulse oximeter, optical heart sensor
Tracking Data Distance, time, speed, calories burned, sleep activity, heart rate, stress level Distance, time, speed, calories burned, activity, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level
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, HR zones, Bluetooth Smart technology, VIRB control, inactivity alert, Move IQ, Find my Device, Garmin Elevate, TrueUp, Body Battery, solar charging, dual grid coordinates format
Notifications Calendar, Email, social apps Calendar, SMS, Email, social apps, incoming calls
Vibrating Alert Yes -
Navigation (GPS) - GPS/GLONASS/Galileo receiver
Payment Technology - Garmin Pay
CONNECTIVITY Garmin Forerunner 45S Garmin fēnix 6S Solar
Wireless Interface Bluetooth, ANT+ Bluetooth, ANT+
DISPLAY Garmin Forerunner 45S Garmin fēnix 6S 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 - Power Glass
INPUT DEVICE Garmin Forerunner 45S Garmin fēnix 6S Solar
Type - Touch buttons
CASE Garmin Forerunner 45S Garmin fēnix 6S Solar
Case Size - 42 mm
Case Shape Round Round
Bezel - Stainless steel
Case Back - Metal
Case Details White | Iris | Black Silver
BAND Garmin Forerunner 45S Garmin fēnix 6S 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 Black
STORAGE Garmin Forerunner 45S Garmin fēnix 6S Solar
Storage Capacity - 64 MB
BATTERY Garmin Forerunner 45S Garmin fēnix 6S Solar
Battery Life - 59 day(s)
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Smartwatch mode - up to 9 days
Smartwatch mode (with solar) - up to 10.5 days
Battery Saver Watch Mode - up to 34 days
Battery Saver Watch Mode (with solar) - up to 59 days
Max Battery GPS Mode - up to 50 hour(s)
Max Battery GPS Mode (with solar) - up to 64 hour(s)
GPS mode - up to 25 hour(s)
GPS mode (with solar) - up to 28 hour(s)
Expedition GPS Mode - up to 20 days
Expedition GPS Mode (with solar) - up to 26 days
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45S Garmin fēnix 6S Solar
Included Accessories Charging/data cable Charging/data cable
Preloaded Software - Garmin Pay
Max Depth of Water Resistance 50 m 100 m
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