Product Description This locator is compatible with Android and iOS systems. Is there a distance limit? No distance limit, globally compatible. It can maintain a fixed location as long as there are other devices within a 10-50 meter range. Is it real-time location tracking? Near real-time location tracking is possible when other devices are nearby. Furthermore, the more devices nearby, the more accurate the location tracking. If there are no other devices nearby, location tracking is not possible until another device appears (location update interval is 5-15 minutes). How does it work? The device sends a secure Bluetooth signal every two seconds. Nearby devices (such as phones, computers, etc.) receive the signal and upload it to the cloud via iCloud as a Service to generate master location data. Only the locator owner can access the location data. Therefore, the more nearby devices, the faster the update speed, and the more accurate the location tracking. Where is it more suitable for use? Generally, it is more suitable for use in busy urban areas or areas with a high number of device users. It is less suitable for remote areas or areas with fewer device users. Please decide whether to purchase based on your own situation. Why is the location inaccurate? There may be no other devices nearby, and location tracking may take 5-15 minutes. (Bluetooth trackers may not be as accurate as GPS, but GPS requires a SIM card, data card, and needs to be charged every few days.) Our Bluetooth tracker uses a button battery and can be used for years without charging. (1) No extra cost. (2) One CR1225 button battery can last for about 2-3 months. Color: Black Material: Plastic Package Contents: 1 x Tracker