Features: - Hassle-Free wireless microphone system - Multi-Source audio signal mixing ability - control audio levels from external devices - mixer receiver System for convenient sound level adjustment - Wireless BT music streaming Ability - dual fixed frequency system design - adjustable rotary controls: echo, tone, volume: mic 1, mic 2 - wired microphone support (2) 1/4'' mic inputs - (2) 1/4'' mic inputs - RCA Audio (L/R) & Video signal input/output jacks - rear panel 1/4'' mixed output - adjustable antennas for extended wireless range - includes handheld wireless microphones - Rugged microphone construction & steel mesh grill - convenient on/off/mute power switch - Battery operated mic, requires (2) 'AA' Batteries, included - ultra-wide frequency range - built-in acoustic pop filter - ideal for speech, karaoke, DJ sound & house party audio Bluetooth connectivity: - simple & Hassle-Free Pairing - Works with all of your favorite devices - (Smartphones, Tablets, Laptops, Computers, etc.) - Wireless BT network Name: 'PyleUSA' - Wireless BT version: 4.2 - Wireless BT range: 60' ft What's in the box: - Audio mixer receiver - wall power adapter - 1/4'' audio cable - 3.5mm to 2RCA audio cable - (2) audio + video (3RCA) cables - (2) handheld microphones - (4) 'AA' Batteries technical specs: - UHF fixed frequency: S12: 517.6Mhz(f1) +521.5Mhz(f2); S34: 533.7Mhz(f3)+537.2Mhz(f4) - Wireless operation Range: up to 165'+ ft. - modulation Mode: FM - Maximum deviation: +/-75Khz - Frequency Response: 80-18khz (+/-3dB) - Frequency stability: 20Ppm - Audio dynamic range: >90dB - S/N ratio: >95dB - T.H.D: 50dB - line input sensitivity: 380mV/-8.5dB - mic input sensitivity: 5mV/-46dB - line input impedance: 20 KO - mic input impedance: 600O - receiver Power supply: 120/240V (18V/500mA Power adapter) - mic element: dynamic - Antenna: built-in Housing - RF output: