Brand Name: HaveDeer Battery Included: Yes Power Source: DC Power Source: DC Communication method: Bluetooth-Compatible High-concerned chemical: none Does It Includes Wireless Communication: Yes Origin: Mainland China Inbox adaptor: No Wireless Communication: Bluetooth Compatibility: Android Certification: CE Certification: FCC Certification: RoHS Product name: Google Smart tag Size: 29x53x8 mm/1.13x2.07x0.31 inch Weight: 12.6g / 0.44 oz Battery: CR2032-230mAh Current: 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's Find Hub app APP: Google's 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