All Xiaomi Mi Smart Band 4 reviews and guides you can find in this app
Xiaomi Mi Smart Band 4 Guide app to help you how to use the product.

Languages ​​Included English and Chinese. Wristband width 18mm, Adjustable wrist strap length 155-216mm
Battery Life: 135mAh battery capacity built in the Mi Band 4, max working time up to 20 days after a full charge.
Health Monitoring: Support heart rate monitoring, heart rate alerts, sleep monitoring, idle alerts; Monitoring your health data o keeping an eye on your healthier body
Activity Tracking: Comes with 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, swimming Counting step, distance, calories burned during sports
5ATM Water Resistant: Up to 50 meters water resistant rate, freely to wear Mi Band 4 when running and exercising
Display: 0.95-inch Colorful AMOLED display with 120 x 240 pixels resolution, up to 450 nits screen brightness

Disclaimer on :
It is not an official Xiaomi Mi Smart Band 4 app. It's just an educational or guide app that helps you to better understand how to use Xiaomi Mi Smart Band 4.
The information we provide is from various reliable sources and is available on many websites.