Goeco JM09 Kids Smart Watch Waterproof Resistant Gsm/ Gprs/ Gps 2 Way Communication Tracker Babysiter Children Smart Watch for Android and IOS(Blue)

does not work

My be for smart people they are Ok, but instruction gives very limited information. I can not get shall I buy SIM card or it shall including. App you shall use ID which in battery, bolted inside, if you did not write it before you close watch, shall open them again.