Peace, mercy, and blessings of God be upon you. A GPS device that works only on Android and iPhone. Battery life is from three months to four months depending on usage. You can change the battery from the grocery store, it's a watch battery. There is currently an offer: buy four GPS devices and get the fifth for free. The offer ends on the 29th of Shawwal. Currently, there are 15 iPhone GPS devices and 5 Android GPS devices. To communicate, call this number (phone number appears when you click the contact button). If there is no answer on this number, please contact this number (phone number appears when you click the contact button) ( Phone number appears when clicking the contact button ) )(( Phone number appears when clicking the contact button )