? Product information Support system: IOS and ANDROID system 4.3 or above (requires wireless connection 4.0) Specifications: Type: Loss Prevention Device material: ABS Color: pink, black,dark blue, orange, white Dimensions: Approx. 1.5x 1.5 x 0.4 inch Battery: CR2032 button battery Wireless distance: 15-20 meters Package includes: 1 x Loss Prevention Device ? Use Reminder 1. The effective use distance of the device can reach 50 feet in a wide range. The button battery can be easily purchased in supermarkets. The original battery can work for more than a month(Time dependent on frequency of use). 2. Support iOS system and Android 4.3 and above (requires Bluetooth 4.0) 3.Please read the manual carefully before using the equipment, if you have any questions, feel free to contact our team, we are more than willing to help you solve the problem-, thanks again for your support and understanding. Service After Sale?If there is any problem, please feel free to contact us, we will do our best to solve the problem for you. One-Click Search ? Use the mobile phone to operate, the tracker will make a sound, so that you can quickly find the things you can't find; At the same time, press the button on the tracker, and the phone will beep to quickly help you find it. Long Service Time?: the GPS keychain tracker is powered by CR2032 battery with a long standby time over 10 months; Featuring low power consumption, it is easy to replace the battery after running out of power; Delicate and elegant appearance makes it look like a work of art. ? ?Portable and Convenient to Carry?: This dog GPS tracker is designed in a compact and portable that is convenient to carry around; You can put it in your wallet as a wallet finder or in the bag with your phone as a phone finder or as other items finders, bringing too much convenience wherever and whenever you are. Item Finder?These key locator tags, can be used as mini dog gps tracking device to prevent pet loss, also suitable for keys, cell phone, wallet, handbag, selfie shutter device, you can also double click the button of the product to cause your phone to ring, so you can find your phone easier.