Same as iF1, iS1 is using iBao’s locating technology to achieve an accurate location tracking. This product is designed for those elderly who are used to use smart phone. iS1 got a Nano water repellent layer, which can avoid the device malfunction after dropping the device into water in most of case. iS1 contains SOS function as well. Elderly can contact with parent immediately by pressing SOS button for three second. The operation system version of iS1 is Android 9.0.