High-concerned chemical : None<br>Built-in Battery : Yes<br>Diaphragm : S-Mall<br>Package : Yes<br>Communication : WireLess<br>Set Type : Multi-Microphone Kits<br>Transducer : Condenser Microphone<br>Use : Karaoke Microphone<br>Style : Handheld Microphone<br>Brand Name : OBAME<br>Origin : Mainland China<br>Certification : CE,FCC<br>How Batteries Are Packed : Batteries Built-In<br>Contains Batteries Or Cells? : Batteries<br>Warranty Type : Supplier Warranty<br>Minimum Frequency Response : 60HZ<br>Audio Compatibility : Mobile<br>Speaker type : Portable Speakers<br>Maximum Frequency Response : 20Khz<br>Model : C20<br>Connection Type : Wireless<br>Smart Speaker : No<br>Input Voltage(V) : 5V<br>With Battery : Yes<br>With Maganet : Yes<br>Battery Capacity(Mah) : 1000<br>Bluetooth Function : Yes<br>