Waterproof smart band with heart rate monitoring and activity tracking. - Brand: Xiaomi - Model Name: Smart Band 7 - Color: Black - Strap Material: Mesh - Display Type: Color - Features: Heart Rate Monitoring - Features: Activity Tracking - Features: Waterproof - Features: Notification Function Thank you for viewing. I am selling this because I no longer use it. The band has been changed from the original, so please understand that this is a used item before considering a purchase.