Garmin Forerunner 45S vs. Garmin D2 Delta S

Smartwatch Comparison, Reviews and Tests

In depth comparison and review of Garmin Forerunner 45S and Garmin D2 Delta S. 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 45S vs. Garmin D2 Delta S Comparison Chart
GENERAL Garmin Forerunner 45S Garmin D2 Delta S
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 15.4 mm
Weight 32 g 65 g
Body Material - Fibre-reinforced polymer
Protection Waterproof Waterproof
Clock Display Yes Yes
FEATURES Garmin Forerunner 45S Garmin D2 Delta S
Sensors Accelerometer, heart rate Accelerometer, thermometre, gyro sensor, heart rate, barometric altimeter, 3-axis compass
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, 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, HRmax, camera remote control, find phone function, HR zones, Move IQ, Garmin Connect compatible, Find my Device, store & play music, Garmin Elevate, TrueUp
Notifications Calendar, Email, social apps SMS, Email
Vibrating Alert Yes Yes
Navigation (GPS) - GPS/GLONASS receiver
Payment Technology - Garmin Pay
CONNECTIVITY Garmin Forerunner 45S Garmin D2 Delta S
Wireless Interface Bluetooth, ANT+ Bluetooth, Wi-Fi, ANT+
DISPLAY Garmin Forerunner 45S Garmin D2 Delta S
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 - Domed sapphire crystal
INPUT DEVICE Garmin Forerunner 45S Garmin D2 Delta S
Type - Touch buttons
CASE Garmin Forerunner 45S Garmin D2 Delta S
Case Size - 42 mm
Case Shape Round Round
Bezel - Stainless steel
Case Back - Metal
Case Details White | Iris | Black Rose gold-tone
BAND Garmin Forerunner 45S Garmin D2 Delta S
Band Type Band Band
Band Size S -
Band Width - 20 mm
Fits Wrist with Circumference 124-185 mm -
Changeable Yes Yes
Clasp Type Buckle Buckle
Band Material Silicone Leather
Band Colour White | Iris | Black Beige
STORAGE Garmin Forerunner 45S Garmin D2 Delta S
Storage Capacity - 16 GB
BATTERY Garmin Forerunner 45S Garmin D2 Delta S
Technology - Lithium Ion
Battery Life - 7 day(s)
Battery Life Details GPS mode - up to 13 hour(s)
Smartwatch mode - up to 7 days
Smartwatch mode - up to 7 days
GPS mode - up to 11 hour(s)
GPS with Music mode - up to 4.5 hour(s)
UltraTrac mode - up to 25 hour(s)
Rechargeable Battery - Yes
MISCELLANEOUS Garmin Forerunner 45S Garmin D2 Delta S
Included Accessories Charging/data cable Charging/data cable, silicone wrist strap (white)
Preloaded Software - Garmin Pay, Garmin Pilot
Max Depth of Water Resistance 50 m 100 m
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