Features: 1. Object finding function: Bind the key tracker with valuables. When the key finder smart tracker is connected with the mobile phone APP Bluetooth, use the APP's search function to make the key tracker sound, so as to find the item. 2. Two-way anti-lost: Open the soft switch of the anti-lost function in the software to realize two-way anti-lost. 3. Remote control: When the key finder locator is connected with the mobile phone APP Bluetooth, remote control can be realized and used as a remote shutter for selfies. 4. Record the lost position after the item is disconnected: When the item is disconnected from the mobile APP Bluetooth, the APP will record the lost position after the item is disconnected, and the lost position will be displayed on the map in the APP after disconnection. Specifications: Color: Black/Blue Size: 2 inch x 1.2inch x 0.43inch(approx) Bluetooth version: BT 4.0 Low Energy Working distance: about 30-49 Feet (without barrier) Suitable for: Wallet, Car, Kid, Pets, Bags, Suitcase or other belongs Standby time: 3-6 month App language: English Package included: 6 X Tracker Device Key finder uses BT 4.0 technology to connect IOS 8.0 or above and Andrioid 4.3 or above smart phones. Show the lost car key, luggage, wallet, dogs, cats distance from you on the APP to let you find them accurately. Attach this wireless tracker to anything we always forget key or wallet and keep track of them. The 2-way key finder will lets you track lost items or be notified when they are out of range with a ring or flash. Key finder smart tracker with compact size, light weight and easy to carry like a key chain on your kids schoolbag or hang on pet collar, real-time viewing locator effectively avoids your kids, pets are lost.