Wonlex is original GPS Kids watches manufacturer, we are always devoted to offering durable products and good services. Wonelx App is upgraded version based on the older app, with optimization of design, function layout, translation, etc. APP function is as follow: Map positioning: Support GPS, LBS, WIFI multiple positioning, Click position button to know baby's location anytime anywhere. SOS number: Available to set 3 SOS number in watch for kids one-press calling in case of emergency. Phoneb