Garmin Forerunner 45S vs. Garmin fēnix 6S

Smartwatch Comparison, Reviews and Tests

Detailed comparison and review of Garmin Forerunner 45S and Garmin fēnix 6S. 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 45S vs. Garmin fēnix 6S Comparison Chart
GENERAL Garmin Forerunner 45S Garmin fēnix 6S
Product Type Sport watch Sport watch
Supported Host Device OS iOS, Android iOS, Android
Wearing Style Watch style Watch style
Width 39.5 mm 42 mm
Height 39.5 mm 42 mm
Depth 11.4 mm 13.8 mm
Weight 32 g 44 g
Body Material - Stainless steel, fibre-reinforced polymer
Protection Waterproof Waterproof
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Garmin fēnix 6S
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
Notifications Calendar, Email, social apps SMS, social apps, incoming calls
Vibrating Alert Yes Yes
Navigation (GPS) - GPS/GLONASS/Galileo receiver
CONNECTIVITY Garmin Forerunner 45S Garmin fēnix 6S
Wireless Interface Bluetooth, ANT+ Bluetooth, Wi-Fi, ANT+
DISPLAY Garmin Forerunner 45S Garmin fēnix 6S
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 3 (scratch resistant glass)
CASE Garmin Forerunner 45S Garmin fēnix 6S
Case Shape Round Round
Case Details White | Iris | Black Silver
BAND Garmin Forerunner 45S Garmin fēnix 6S
Band Type Band Band
Band Size S -
Fits Wrist with Circumference 124-185 mm -
Changeable Yes -
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour White | Iris | Black White | Black
STORAGE Garmin Forerunner 45S Garmin fēnix 6S
Storage Capacity - 32 GB
RAM Garmin Forerunner 45S Garmin fēnix 6S
RAM Size - 64 MB
BATTERY Garmin Forerunner 45S Garmin fēnix 6S
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 45S Garmin fēnix 6S
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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