Featuresr 2 in 1 design it can be used as a intelligent gps locator and tail lightr support app control you scan the two dimensional code download app support for android and apple systemsr gps lbs dual location using gps and lbs integrated positioning technology more effective and accurater real time tracking the product is real time positioning and vibration of the telephone alarm voice monitoring electronic fence track query etcr high quality internal battery last for around 30