HQsing Karaoke Microphone MR423. Anti-hauling, true diversity, or lightweight are the best keywords for this series. You can’t go wrong with this investment for your home pro-audio purpose. Hope you will enjoy it. 30-days Risk Free Trial?? N phí trong 30 ngày. I 1 trong 365 ngày. FREE 24/7 Lifetime Customer Service. Features and further details. Frequency Band 640 MHz – 690 MHz. Frequency Increment 250 kHz. Frequency Bandwidth 30 MHz. Dimensions (LxWxD) 480 x 340 x 70 mm. Chassis specification: Standard 1U. Number of channel groups: dual channels. Frequency stability: +-0.005%, PPL. Carrier frequency band: UHF 500-900 Mhz. Channels: 200 preset channels. Effective working distance: 100m (open and wide areas). Oscillation mode: PPL frequency control. Comprehensive S/N ratio: >110dB. Comprehensive frequency response: 40Hz 18Khz +-3dB. Power supply: DC 12V/1A. Sound head: dynamic/cardioid directivity. RF power output: 20mW. Current consumption: 120 mA. Battery: 2 AA batteries (about 8-10 hours). Receiver power consumption: 3W. We will respond to you within 24 hours and do our best to help you out! WE OFFER 24/7 CUSTOMER SERVICE!! This includes all original packaging, accessories, and documentation. T work for customer? Items that do not have the original packaging cannot be accepted for return.