Item Type: Anti Lost Alarm Sensor_x000D_ Material: ABS_x000D_ Bluetooth: 4.0 _x000D_ Working Distance: Approx. 25m / 82ft ( Barrier-Free) _x000D_ Battery: CR2032 220mAh x 1 ( Shipped with Battery) _x000D_ Compatible: For iOS / Android ( for iOS Systems Need More Than 11 Versions; for Android System Needs Version 8.0 or Above)1It can provide the last seen pushpin on the map to help you find the goods and locate your car in the parking space. 2With the function of controlling the phone to take pictures automatically, it can realize the remote control taking pictures. 3Using low-power wireless technology, it can stand by for more than 6 months, and the battery is easy to replace. 4A mobile phone can manage up to 8 anti?lost devices at the same time, which can help you effectively manage multiple items. 5Connect it to the items you often misplace, which can help you find your items quickly to save searching time.1 xAnti Lost Alarm Sensor 1 x Manual