Features:1. Two-way anti lost2. A key finding things3. The location information4. The Internet search5. Ultra-low power consumption6. Multitasking management Compatible device:For iOS system: for iPhone 4s /for iPhone touch 5gen/for iPad 3 or later comers.For Android device that support bluetooth 4.0 with 4.3 or above system version. Like for Nexus 4/5; for Samsung for Galaxy S3/ for S4/ for Note 2/Note 3， for huawei P7 or othersPlease note: Above noted for samsung device for android 4.2 are specially served by appTwo mode:Bluetooth anti lost: The maximum range of the device is 50m.GPS anti lost: No limitHow to use:1，install the APP the app store to search the nut2，The binding the nut please make sure that the bluetooth open the patch near the phone click on the patch button.3，Operating the nut through the APP can call the nut to check the position of the nut4，Set the nut can adjust the alarm distance open two-way lost look for lost items.APP:Please visit www.nutspace.com/download.phpSpecifications:Alarm distance: 50 metersBattery: CR2032Color: WhiteSize: 37*37*6mmNet weight: 15g Package Included:1 X Bluetooth tracker1 X CR2032 Battery1 X Hanging lanyard1 X Sticker