Bests & Worsts Reviews from Amazon

I bought 3 of the devices but have only started one of them. It does what it says but you need to read between the lines. The device has two states - one is moving and one is sleeping which kicks in after 20 minutes. The device only communicates its position a set intervals - if you set it to say every minute you will quickly run out of battery and prepaid communications. More typical settings of say one hour in sleep mode and 10 minutes in moving mode means that if your kid goes missing you may need to wait 10 minutes to locate him. If it's in sleep mode because he has left his bag for 20 minutes somewhere the you will need to wait one hour. Not very practical. If the device does not have line of site of a GPS satellite because for example it is indoors the accuracy drops from a few metres to a few miles / kilometres. Bottom line is that this is not a device that in typical settings will allow you to instantly locate the person wearing it and whose accuracy can drop from a few meters to a few kilometres when inside a building.