GPS global positioning can be used both domestically and internationally, making it easy to find your beloved pet without any effort One mobile phone can control multiple devices simultaneously. One mobile phone can control multiple locators to work simultaneously, making it easier to find and more portable Easy to replace high capacity batteries with long-lasting battery life for a whole year It can be used on both Android and ios phones. This is free to use and does not incur any fees. Dual use version: Download findmytag on your phone and add it to the app through monitoring teeth. You can locate it on the map by looking at it There is no height limit, globally available, as long as there is a for ios and for device within 10-50 meters nearby. Because it cannot locate itself, it relies on nearby for devices to locate it Product Size:45x33x10MM Colour:Black Material:ABS Package Contents: 1 x Locator (with button battery cr2032) 1 x Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.