Garmin Forerunner 945 vs. Garmin Forerunner 645 Standard Comparison Chart

Check on Amazon

Comparison chart

Product name	Garmin Forerunner 945	Garmin Forerunner 645 Standard
Best Offers	$450 ^Amazon	$239 ^Amazon
OS	Proprietary OS	Garmin Watch OS
CPU	N/A	N/A
Battery life	2 weeks	7 days
Battery capacity	N/A	N/A
Glass protection	Corning Gorilla Glass DX	Corning Gorilla Glass 3
RAM	N/A	N/A
Storage	16 GB	N/A
Screen size	1.2 in	1.2 in
Screen type	Transflective memory-in-display (MIP)	transflective memory-in-pixel (MIP)
Screen shape	Round	Round
Screen resolution	240 x 240 px	240 x 240 px
Weight	50 g	41.8 g
Bluetooth version	4.2	N/A
Wi-Fi	yes	yes
Heart Rate Monitor	yes	yes
GPS support	yes	yes
NFC support	no	no
Ambient Light Sensor	yes	no
SIM Card Support	no	no
Speaker	no	no
Mic	no	no
Camera	no	no
Water resistance	5 ATM	5 ATM
Charging type	USB charging cable	Magnetic connector
Release date	April, 2019	Feb, 2018
Warranty	12 months	12 months
Other features	Hiking, Climbing, Skiing, Snowboarding, XC Skiing, Stand Up Paddleboarding, Rowing, Kayaking	Running, Treadmill Running, Indoor Track, Trail Running