Feature: 1. Findmytag is designed for use with the Findmytag app. 2. To use this product, download the app, compatible with iPhone and Android devices. 3. Global positioning function: The tracker emits a Bluetooth signal every two seconds. Nearby Apple devices can detect this signal and anonymously relay it to the iCloud network. Through the app, users can view the last known location of the tracker, enabling item recovery. 4. Proximity search function: When connected via Bluetooth, use the app to trigger a sound from the Findmytag device, helping locate nearby items. 5. Leverage a global network of Apple devices to help locate lost items. Specifications: - MCU (Microcontroller): ARM 32-bit processor - Bluetooth: 2.4GHz low-energy Bluetooth - NFC: Type 2 Tag - Sensor: Three-axis accelerometer - Alert method: Buzzer, LED - Battery: CR2032, 220mAh - Supported platforms: Android 4.4 and above, iOS 8.0 and above - Protection class: Waterproof - Battery life: Up to 365 days Note: Other items shown in images are not included. Package includes only the tracker (keychain not included). Material: Plastic Color: White / Black Package Contents: 1 x Locator Note: Lighting and display differences may cause slight color variations between the image and actual product. Measurement error allowed: +/- 1-3 cm.