Brand Name: kebidumei Transducer: Dynamic Microphone Set Type: Transmitter Sets High-concerned chemical: None Style: Lavalier Microphone Use: Live Origin: Mainland China Communication: WireLess Built-in Battery: Yes Package: Yes Polar Patterns: Uni-directional Certification: CE Diaphragm: S-Mall Product Name: Lavalier Microphone Interface: for Android&Apple Bluetooth Protocol: 2.4GHz Support 1: Charging While Using Support 2: Intelligent Noise Reduction Support 3: Real Time Radio Reception Package List: LinkedIn+Receiver+Charging Cable+Manual Feature 1: wireless microphone Feature 2: wireless microphone for cell phone Feature 3: wireless lapel microphone for mobile Feature 4: lavalier microphones wireless Feature 5: microphones karaoke Feature 6: microphones wireless Feature 7: Dynamic Microphone Feature 8: Condenser Microphone Feature 9: Hanging Microphones