Brand Name: RSH Battery Included: Yes Origin: Mainland China High-concerned chemical: None Type: HOME USE Compatibility: Android Certification: CE Certification: FCC Certification: RoHS Size: 29x53x8 mm/1.13x2.07x0.31 inch Weight: 12.6g / 0.44 oz Battery: CR2032-230mAh Voltage: DC 3V Current: ≤5uA(Standby) / ≤Max 70MA Buzzer: Built-in ≥75db (in 10cm) Temperature range: -10° C~+50℃ Humidity range: ≤95% (Non-condensing) Usage requires: Android devices with Android 9.0 at least and Google Find Hub 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