Battery Included: the anti lost dog locator is included button battery, which can standby up to 6 months, low energy consumption. Wide Usages: the pet locator is not only suitable for dogs, cats, and other pets, but also suitable for kids, luggage, bags, wallets, keys, phones, and more. Manual Provided: the dog tracker comes with an effective manual, which can teach you how to use it, and let you have a comprehensive understanding its functions. Practical Functions: the pet GPS tracker is compatible with Bluetooth, which can be connected with mobile devices such as mobile phones through APP software, realizing the loss reminder function, two way search, remote control photo, recording, and other functions. Easy to Find: the pet tracker allows you to know the exact location of your pet, and you can check your pet's location at any time, know exactly where your pet is moving, avoid the pet loss and theft; Besides, you can set up an area around the tracker to immediately alarm when a pet enters or leaves the area.