Garmin Forerunner 45S vs. Garmin Instinct 2S Solar

Smartwatch Comparison, Reviews and Tests

Detailed comparison and review of Garmin Forerunner 45S and Garmin Instinct 2S Solar. 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 Instinct 2S Solar Comparison Chart
GENERAL Garmin Forerunner 45S Garmin Instinct 2S 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 40 mm
Height 39.5 mm 40 mm
Depth 11.4 mm 13.3 mm
Weight 32 g 43 g
Body Material - Fibre-reinforced polymer
Protection Waterproof Waterproof
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Garmin Instinct 2S Solar
Sensors Accelerometer, heart rate Accelerometer, thermometre, barometric altimeter, electromagnetic compass, 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, VIRB control, inactivity alert, Find my Device, LiveTrack, Physio TrueUp, solar charging, weather information, dual grid coordinates format, trackback routing, Body Battery Energy Monitor, accident detection
Notifications Calendar, Email, social apps Missed calls, calendar, SMS, Email, social apps, incoming calls
Vibrating Alert Yes Yes
Feedback Type - Vibration alert, visual interface
Navigation (GPS) - GPS/GLONASS/Galileo receiver
Payment Technology - Garmin Pay
CONNECTIVITY Garmin Forerunner 45S Garmin Instinct 2S Solar
Wireless Interface Bluetooth, ANT+ Bluetooth, ANT+
DISPLAY Garmin Forerunner 45S Garmin Instinct 2S Solar
Type Memory-in-Pixel LCD - colour - transflective Memory-in-Pixel LCD - monochrome - transflective
Resolution 208 x 208 pixels 156 x 156 pixels
Screen Size 1.04" -
Dimensions (WxH) - 20 mm x 20 mm
Screen Protection - Power Glass
INPUT DEVICE Garmin Forerunner 45S Garmin Instinct 2S Solar
Type - Push buttons
CASE Garmin Forerunner 45S Garmin Instinct 2S Solar
Case Size - 40 mm
Case Shape Round Round
Case Details White | Iris | Black Neo tropic
BAND Garmin Forerunner 45S Garmin Instinct 2S Solar
Band Type Band Band
Band Size S -
Band Width - 20 mm
Fits Wrist with Circumference 124-185 mm 112-180 mm
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Silicone
Band Colour White | Iris | Black -
STORAGE Garmin Forerunner 45S Garmin Instinct 2S Solar
Storage Capacity - 32 MB
BATTERY Garmin Forerunner 45S Garmin Instinct 2S Solar
Technology - Lithium Ion
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Smartwatch mode - up to 21 days
Smartwatch mode (with solar) - up to 51 days
Battery Saver Watch Mode - up to 50 days
Max Battery GPS Mode - up to 54 hour(s)
Max Battery GPS Mode (with solar) - up to 114 hour(s)
GPS mode - up to 22 hour(s)
GPS mode (with solar) - up to 28 hour(s)
Expedition GPS Mode - up to 25 days
Expedition GPS Mode (with solar) - up to 105 days
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45S Garmin Instinct 2S Solar
Included Accessories Charging/data cable Charging/data cable
Max Depth of Water Resistance 50 m 100 m
Max Operating Temperature - 60 °C
Min Operating Temperature - -20 °C
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