-brand:xiaomi
-model:mi band 4
-functional features : fitness distance /steps /calories monitoring, calls/sms/whatsapp /apps vibration allert when you connect to your phone, heartrate sensor, weather display, phone music control, weather display, many changeable wallpapers
-battery :rechargeable with upto 20 days of power depending on usage
-straps material :rubber
-water resistance :5atm