Fitbit Ace 3 vs Fitbit Charge 4 comparison

Show Only Differences Highlight Differences	Fitbit Ace 3	Fitbit Charge 4
key specs
Water Resistant	Yes	Yes
Compatible Devices	Android, iOS	iOS and Android
Battery Life (Days)	8	7
Heart Rate Monitor	-	Yes
general
Brand	Fitbit	Fitbit
Model	Ace 3	Charge 4
Release date	March 9, 2021	March 31, 2020
Color	Black/ Sport Red, Cosmic Blue/ Astro Green	-
Ideal For	Kids (Age 6+)	Unisex
Material	Silicone	-
Suitable For	Health, Lifestyle	Sports, Fitness
Touch Enabled	Yes	-
Water Resistant	Yes	Yes
Reading Type	-	Digital
display and battery features
Battery Life (Days)	8	7
Battery Type	Lithium Polymer (Li-poly)	Lithium Polymer (Li-poly)
Charge Time (hours)	2	-
performance features
Shock Resistant	Yes	-
Water-Resistant Depth (metres)	50	50
connectivity features
Bluetooth Enabled	Yes	Yes
Bluetooth Version	v4.2	v4
compatibility
Compatible Devices	Android, iOS	iOS and Android
activity tracking function
Alarms	Yes	-
Do Not Disturb Mode	Yes	-
Reminders	Yes	-
Sedentary Reminder	Yes	-
Sleep Tracking	Yes	-
Step Counter	Yes	Yes
Heart Rate Monitor	-	Yes
workout modes
Swimming	Yes	-
sensors
Accelerometer	Yes	Yes
Pedometer	Yes	-
Vibration Motor	Yes	Yes
Barometric Altimeter	-	Yes
Optical Heart Rate Sensor	-	Yes
dimensions
Width (mm)	37.39	22.7
Height (mm)	16.8	35.8
Depth (mm)	12.9	12.5

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