The following functions are provided for the elderly with dementia and special children:1. Voice call 2. Video call 3. SOS button 4. GPS positioning 5. Geofence 6. Heart rate 7. Blood pressure8. Support multi-caring people Everyone in the family can log in to the Osmile GPS Tracker App to interact with the elderly with dementia or special children remotely, knowing their location and provide them with prompt helpThe Osmile GPS Tracker App is equipped with various safety guards, personal satellite locators, anti-lost GPS positioning watches for the elderly with dementia, and anti-lost GPS positioning watches for children.If you have any product related questions, please call customer service at 02 2321 6370When you purchase the Osmile GPS Tracker App, customer service staff will contact you to assist you in installing and using the watchProvide you with the most complete after-sales service