The SDD Finder is easy to put on/in your belongings, it is perfect for locating belongings such as keys, backpacks, bags, toys, and so on. Works with Apple Find My network: Put the SDD Finder on/in your belongings items, pairing finder with your iPhone, iPad, iPad touch, or Mac. by using the Apple Find My app, you can locate your belongings whenever you want. AUDIBLE ALARM: Plays an audible alarm with a volume of max 110 dB, help to find your missing items quickly and easily. NOTIFICATION WHEN LEFT BEHIND AND MOTION DETECTION: Get notified when the belonging is accidentally left behind. When the finder keeps 3 days far away from your iPhone, iPad or other Apple devices (the exact time may modify depends on the Apple technology), it will alarm continuously for 10 seconds if the finder is moved by anyone else. LONG BATTERY LIFE: The Hexagon Finder includes one pre-installed CR2032 button battery with long battery life. CUSTOMIZED KEY RING FOR FREE: Special design key ring, cute and easy to connect the Finder with your belongings. SDD Finder Detected Near you: SDD Finder is designed to discourage unwanted tracking. If someone else's SDD Finder/SDD backpack/SDD Handbag/SDD Luggage finds its way into your personal items, your iPhone will give you a notice that a Finder is traveling with you and send you an alert on your iPhone. After a while the Finder will play a sound. This notification is warning you that there is an SDD Finder near you. This notification does not give you permission to go into someone else's items/bags/backpacks/handbags/luggages to disable the SDD Finding system or other illegal actions.