Features:
Heart Rate Monitor
Step Count
Calorie Count
Blood Pressure Monitor
Blood Oxygen Monitor
Message Reminder
Sleep Monitoring
Camera Control
Find My Watch & Phone
Alarm Clock
Call Reminder
The other option was looking for my teen daughter are below but I think their display might be big for kid's wrist.
Xiaomi Band 9 Active Smartwatch, 18 Days of Continuous Use, 1.47" TFT Display, 24-Hour Health, Enhanced Chip, Lightweight Design, Interchangeable Frame, Compatible with iPhone & Android, Pink
$46.30
https://www.amazon.com.au/Xiaomi-Smartwatch-Continuous-Light…
HUAWEI Band 9 Smart Band, Fitness Tracker,1.47" AMOLED Display,Long Battery Life,Heart Rate,SpO2,Health Monitor,100+ Workout Modes, 5ATM Waterproof,Ultra-Light 14g,Compatible with Android & iOS,Pink
$64.00
https://www.amazon.com.au/dp/B0CX4ZLCV4?th=1
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Global Version Xiaomi Band 9 Mi Smart Bracelet 9 Color AMOLED 1.62" Ultra 21 Days Battery Life Miband Wrist Watch Blood Oxygen
AU$62.69
https://vi.aliexpress.com/item/1005007393776689.html
That picture looks exactly like a Xiaomi Mi Band 7.