Mini Bluetooth Tracer GPS Locator Keychain Pet Dog Child Tracker Anti Lost Alarm Feature: Global positioning function: The locator will send out a safe Bluetooth-compatible signal every two seconds, so that the surrounding compatible for ios devices can detect and receive this signal and upload and share it to the compatible for IOS ICOUD server. Owners can know the location of Findmytag through the APP software, navigate to find items, and let you find things worry-free. Description: Name: Smart Tracker MCU (Microcontroller): ARM32-bit processor, 2.4G Bluetooth-compatible low energy compatible NFC (Near Field Communication): NFC Forum Type2Tag Sensor: Triaxial Accelerometer Reminder method: buzzer, LED Battery capacity: CR2032, 220mAh Support platform: Compatible for Android4.4 and above version 0S8.0 Protection level: waterproof Battery life: 365 days Product size: 38x34x9mm Packing list: 1 x Positioner 1 x Instructions Note: Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.