I've been using it for about a week. It works without any problems. I threw away the box. Xiaomi Smart Band 10 Smartwatch - 1.72" Large Screen Experience, 21 Days of Continuous Use, 1500 nits Brightness, Enhanced Visibility, Enhanced Swimming Mode, Equipped with a 9-axis Motion Sensor, 24-hour Health Management, Sleep Monitoring Update, Smart Band, Incoming Call Notifications & LINE App Notifications, Compatible with iPhone & Android, Mystic Rose - Brand: Xiaomi - Model Name: Smart Band 10 - Color: Pink