Garmin Forerunner 45 vs. Garmin fēnix 6S Sapphire

Smartwatch Comparison, Reviews and Tests

In depth comparison and review of Garmin Forerunner 45 and Garmin fēnix 6S Sapphire. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.

Smartwatch Specifications Comparison

Garmin Forerunner 45 vs. Garmin fēnix 6S Sapphire Comparison Chart
GENERAL Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Product Type Smart watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
Wearing Style Watch style Watch style
Width 42 mm 42 mm
Height 42 mm 42 mm
Depth 11.4 mm 13.8 mm
Weight 36 g 44 g
Body Material - Stainless steel, fibre-reinforced polymer
Protection Waterproof Waterproof
Clock Display Yes Yes
FEATURES Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Sensors Accelerometer, heart rate Accelerometer, barometric altimeter, pulse oximeter, 3-axis compass, 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, blood oxygen saturation
Goal Setting Yes Yes
Features Music remote handling, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device Bluetooth Smart technology, store & play music, PacePro pace guidance
Notifications Calendar, Email, social apps SMS, social apps, incoming calls
Vibrating Alert Yes Yes
Navigation (GPS) - GPS/GLONASS/Galileo receiver
CONNECTIVITY Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Wireless Interface Bluetooth, ANT+ Bluetooth, Wi-Fi, ANT+
DISPLAY Garmin Forerunner 45 Garmin fēnix 6S Sapphire
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
CASE Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Case Size - 42 mm
Case Shape Round Round
Case Details Black Rose gold-tone | Carbon grey DLC
BAND Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Band Type Band Band
Band Size L -
Fits Wrist with Circumference 129-197 mm -
Changeable Yes -
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour Black | Lava red Powder grey | Black | Heathered black
STORAGE Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Storage Capacity - 32 GB
BATTERY Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Technology - Lithium Ion
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Smartwatch mode - up to 9 days
GPS mode - up to 25 hour(s)
Max Battery GPS Mode - up to 50 hour(s)
Expedition GPS Mode - up to 20 days
Battery Saver Watch Mode - up to 34 days
GPS with Music mode - up to 6 hour(s)
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45 Garmin fēnix 6S Sapphire
Included Accessories Charging/data cable Charging/data cable
Max Depth of Water Resistance 50 m 100 m
Warranty - 1-year warranty
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