Features: 1. Findmytag is used for APP use, APP name: Findmytag. 2. To use this product, you need to download the APP, which can be used for smart phones. 3. Global positioning function: The locator will send out a safe BTsignal every two seconds, so that the surrounding iOS devices can detect and receive this signal and upload and share to the online server. The owner can know the location of Findmytag through the APP software, Navigable to find items, let you find things no need to worry. 4. When the connected, click search to make the Findmytag make a sound, and the owner can find the location of the item. 5. Global Positioning System, let 2 billion friends around the world help you find your lost items. Specifications: Material: ABS, Metal Size: Approx. 3.2x0.9cm/1.26x0.35in BTVersion: 5.0 Support protocol: EDR+BLE BTTransmission distance: 10 meters Input current: for DC 5V Battery: 2032 button battery Battery capacity: 240MA Battery life: 2-3 months Color: White/Black Package Includes: 1x Tracker 1x Manual note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.