Easy to use: the key finder item is connected to the phone, you can make the product noise to find your things, you can also double-click the product's button to cause your phone ring, making it easier for you to find your phone; It compatible with APP iSearching, and the phone systems are different, note that compatible with IOS 7.0 version or later, Andriod 8.0 version or later; Please read the instructions carefully and operate in strict accordance with the contents of the instructions. Widely applicable: these key finder tags are suitable for keys, pets, phone, wallet, handbag, selfie shutter device, you can remote control the smart phone camera of your by pressing on the finder button; Note: there is no GPS positioning function, only the location where the Bluetooth is disconnected can be recorded. Package contents: you will receive 5 pieces of smart item locators with 5 pieces of keychains, 10 pieces in total, sufficient quantity will satisfy your needs, or you can share them as gifts with your friend or family; Each key finder contenting 1 CR2032 button battery. Different colors: these alarm reminders are available in 5 stylish colors, including black, white, pink, green and blue, enough colors for you to choose and use according to your own preferences. Measurement: each anti lost locator measures approx. 5.2 x 3.1 x 1.1 cm/ 2.05 x 1.22 x 0.43 inch, suitable size for you to hang on the key chain, lightweight and sturdy, providing more convenience for you in daily life.