Durable ElectricityThe battery of this product is CR2032 power supply, the standby time is more than 5-6 months, and it is easy to replace. Connect with mobile phone Bluetooth function and two-way search, this function can connect multiple anti-lost devices at the same time Easy connection and useConnect with mobile phone Bluetooth function , two-way search function, can connect 7 anti-lost devices at the same time, Bluetooth to key finder tool If you lose your phone, press the button on the tracker twice to call the phone Portable and SizeOur key finder tool is very convenient to carry. It's like a simple keychain. You don't have to worry about not finding your own key, phone, wallet, purse, or beloved pet in the office, home, outdoors, etc. Perfect GiftThe key finder can help you and your family find lost keys, wallets or other valuables in seconds. Thoughtful gifts for family and friends, ultra-thin, lightweight, simple and modern design makes it easy to fit in wallet, wallet and key ring Distance and functionThe tracker of positioner controls the distance range of 10 to 15 m. Your anti-lost, when the mobile phone and the anti-loss device exceed the default effective distance, two-way automatic alarm, search for the owner to prevent the loss (used in the elderly, children, pets, etc. ) Multitasking management, one mobile phone, can manage up to 7 anti-lost devices at the same time