Rockville RKI65BT Dual UHF Wireless Microphones+Bluetooth Karaoke Mic Interface, Black. Rockville RKI65BT Dual UHF Wireless Microphone w/ Karaoke Interface+Mic Mixer. Connects to any home audio receiver, television iPads, computers, and more. 3.5 mm aux input. ¼ TS mix output Output passes through the signal of all the mics, as well as any input device. 3.5 mm aux output passes through the signal of all the mics, as well as any input. 2 UHF wireless microphones with 8 switchable frequencies. Each mic has a nice heavy feel to it and has a digital display making it easy to switch frequencies. Adjustable music input volume. Independent adjustable Mic levels. Mic A: 556.1 558.4 560.7 562.2 564.5 566.8 568.3 570.6. Mic B: 574.1 576.4 578.7 580.2 582.5 584.8 586.3 588.6. Number of channels: 8. Frequency response : 30 Hz – 18kHz ±3dB. Operating range: 200 Feet. Power Supply: 3V (2 AA Batt). 100-240V compatible with included micro USB power cable (5 feet). 14 TS mix output Output passes through the signal of all the mics, as well as any input device. Frequency response : 30 Hz – 18kHz 3dB. Wipe clean with a soft, damp cloth. Recommended Uses For Product: Karaoke. Connector Type: USB, 3.5 mm Jack. Special Feature: Mute Function. Compatible Devices: Television, Personal Computer. Package Dimensions: 12.99 x 11.18 x 2.76 inches. Item Weight: 2.99 pounds. Item model number: RKI65BT. Batteries: 2 AA batteries required. Date First Available: February 2, 2021. Country of Origin: China. And we will work with you to resolve it to your satisfaction.