Wear the wristband while you sleep, and then check your sleep data on the APP.
It is possible to change the strap, however, the professional tool is required.
The waterproof level is IP67, but soaking the device or wearing it while swimming, diving, or taking a hot bath is prohibited.
All functions of the bracelet can be used, such as call reminder, remote camera,anti-lost and more.
It resets at midnight every day.
Yes, DB-01 shows the name of calling person and message
No, it works with smartphones only.