Brand Name: Wesense Battery Included: Yes Origin: Mainland China High-concerned chemical: None Compatibility: Android Certification: CE Certification: FCC Certification: RoHS Product name: Smart tag for Android Size: 29x53x8 mm/1.13x2.07x0.31 inch Battery: CR2032-230mAh Voltage: DC 3V Current: ≤5uA(Standby) / ≤Max 70MA Buzzer: Built-in ≥75db (in 10cm) Humidity range: ≤95% (Non-condensing) Usage requires: Android devices with Android 9.0 at least and Google Find My app Country / Region has services Restricted by Google LCC can not use the tracker: Such as Russia ,China ,North Korea, Iran ,Cuba ,Crimea ,Syria , Central Asian countries ,Pakistan ,and so on Choice: yes