ZERFUN 4-Channel UHF Wireless Microphone System Rechargeable, Metal Handheld Wireless Microphones Cordless Mics Professi

4-CHANNEL RECHARGEABLE WIRELESS MICROPHONE SYSTEM: ZERFUN UHF Rechargeable Wireless Microphone System that comes with four rechargeable handheld metal cardioid microphones and metal receiver box with with Independent Volume Control & ECHO & Bluetooth. Perfect for home karaoke, meeting, party, church, DJ, wedding, and much more. INPUT: ①1/4” Wired Mic Input; ②1/8"(3.5mm)Audio Input; ③Bluetooth Input(Turn on your device's Bluetooth, search "X168" and connect). OUTPUT: ①1/8"(3.5mm) Audio Output; ②1/4"(6.35mm)Audio Output. METAL RECEIVER BOX WITH INDEPENDENT VOLUME CONTROL & ECHO & BLUETOOTH: The devices and the chassis for the receiver are made from metal. Receiver Box has one Mic Input and Mic Vol Control for Wired Microphone; Wireless Mic-A & Mic-B & Mic-C & Mic-D Independent Volume Control; Microphone Adjustable ECHO Function; Bluetooth Function to use Receiver Box as a Bluetooth Receiver to play background music(Turn on your device's Bluetooth, search "X168" and connect; BT Range about 32 Feet). BATTERY INFO & TRANSMISSION RANGE: Each microphone use built-in rechargeable battery. Working Time: 10-12 Hours; Charging Time: 3-4 Hours. This ZERFUN Wireless Microphone System can support up to 200 feet range, 50 compatible frequencies on each channel(4 X 50) for interference-free reception. The UHF frequencies range within 500 - 599 MHz, are compliant with the FCC regulations. PACKAGE LIST: ZERFUN Rechargeable Wireless Microphone x 4; Receiver Box x 1; Power Adapter x 1; 6.35mm to 6.35mm Cable x 1; 3.5mm to 3.5mm Cable x 1; Audio Cable x 1; Microphone Charging Cable x 2; Microphone Windscreen x 4; Antiskid Ring x 4; User Manual x