1、Real time positioning: real-time dog location can be checked on APP map, device location frequency, the default location upload time is every 10 minutes 2、 fence: set pet travel range on mobile phone APP. Once pets come out of the setting area, it will automatically alert the owner. Voice call: you can call the dog through the APP remote end 3、Footprint tracking: you can find out where the dog has been in the past three months 4、Low power alarm: mobile APP will display the percentage of real time electricity and remind to charge timely 5、Deep : IP67 level , rain proof and dustproof. Wear resistant collar: the collar is tough, tensile and anti pulling Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.