Anti-lost alarm and two-way search by phone: Click the "Call Device" icon on "Search" to trigger the intelligent person-finding alarm and find your device with one click. You can also easily find your phone by triggering its ring tone by double-clicking the button on the smart viewfinder. Disconnection alarm:When your items and phone are out of Bluetooth range for a period of time, a prompt will pop-up on your phone.Multiple devices online at the same time: Multiple devices can be added and managed for use on your phone, Pad, pod touch or MAC. 60DB high volume:The sound is up to 60db, and the working diameter in an unobstructed open space can reach 20-50 meters. Up to 15-30 meters when there are obstacles indoors Connection memory and location recording: The mobile APP will record the last location when disconnected and pop-up a prompt to help find the lost device more easily.Support siri voice:Supports Siri voice calls to find device location. Notice:1. This product is not a WIFI product, but a Bluetooth product. The mobile phone's Bluetooth must be turned on when using it.2. Compatibility: only applicable to IOS system. (Each mobile phone has built-in search software, no need to download any software.)3. Battery: CR2032 (battery not included) Suitable for various places: This tracker device is mini portable and can easily fit into a purse or backpack. It can also be used as a keychain or accessory, hung around a backpack or pet's neck, making it versatile. ① Prevent children and the elderly from getting lost: track their whereabouts in real time. ② Prevent small pets from getting lost: Know the location of pets in real time, so you don't have to worry about pets running too fast and not being able to find them. ③ Prevent wallet from being lost: Mini portable design, easy to carry in your wallet. ④ Prevent luggage from being lost: You d