This app use iPhone (iPhone 4s, iPhone 5,iPhone 5c, iPhone 5s, iPhone 678, iPhone 678 plus, iPhone x, iPhone xs, iPhone xs max)/iPad (iPad 3，iPad 4,iPad Air, iPad Air 2,iPad mini, iPad mini 2/3/4 , iPad Pro) /iPod touch 5/6 bluetooth communication with Rtrivr ble hardware products(R616, R621, R631, R633, etc), to achieve the two sides to alarm, data transmission, remote control picture, remote video, etc.
Continued use of GPS running in the background can dramatically decrease battery life