Fitbit Ace LTE v2
Garmin vivoactive 5 v2

Device Details

Activity Features

Activity Tracking: Monitors steps, active minutes, sleep and distance. Tracks activities like running, biking, and sports. Has goal setting where kids can set daily step and activity goals. Movement reminder to encourage kids to stay active.
Family account: Parents can manage and view their child's activity.
Water resistant: Yes

Activity Tracking: Monitors steps, calories, distance, heart rate, sleep tracking, blood oxygen, stress tracking, GPS, energy levels, hydration, and women’s health. Tracks running, cycling, swimming, yoga, and more. Also has sports apps for workouts modes and guided exercises. Libre smart push notifications where the glucose reading mirrors the smartphone device
Water resistant: Yes

Age

7+ years

13+ years

Battery

Up to 16+ hours

Up to 11 days of battery life

Brand

Fitbit

Garmin

Continuous Glucose Monitoring (CGM) Compatible

No

Dexcom (G6 or G7) 
Freestyle Libre 

FSA/HSA Eligible

Possibly with Letter of Medical Necessity (LMN) or a health reimbursement arrangement (HRA)

Possibly with Letter of Medical Necessity (LMN)

Model

Ace LTE

vivoactive 5

Phone

Yes

Yes

Price (USD)

$229.95

$299.99