D'COM ECO Professional Wireless Karaoke Microphone. - Hours of use: 12 hours. In case of below conditions. We will reply to you within 24 hours. - Bandwidth: <200 KHz. - Channel spacing: 200 KHz. - Use of multi-tone to prevent confusion.
Create your own radio station： The new TR510 FM transmitter uses the latest chip QN8007 to generate a more stable signal, and does not produce noise during transmission, is easy to use, does not produce noise during transmission, and has good sound quality characteristics. TR510 FM is very suitable Churches, farms, supermarkets, theaters, cinemas, launchers universities, schools, conferences and many other drives-in the event. About Us