WHAT YOU GET:2 x handheld microphone,1 x receiver with a 6.35mm plug,1 x USB charging cable,1 x user manual,1*Audio line,1*32mm Microphone wall mount and 1*screw pack. If you have questions,please contact us directly for proper suggestions. MULTIPURPOSE MICROPHONE:Plug and play,no need pair.No need to buy batteries! The receiver adopts 6.35mm (1/4") MIC interface,which can be directly plugged into any audio (especially perfect for Web podcast,Karaoke,Speech,Recording,Meeting,Performance,Opening Ceremony,large-scale concert etc.Design for Outdoor Karaoke Speaker,PA Speaker System,Power Amplifier, etc).Can't Plug In AUX input,Otherwise No Sound can be heard.(Not Compatible with Bluetooth Speakers). ADVANCED TECHNOLOGY:Microphone and receiver use 2.4GHz connection technology, enable the microphones stronger anti-interference ability compared with UHF frequency band .Range indoors > 50ft (outdoors > 100ft); frequency response 50Hz-18kHz; signal-to-noise ratio >70dB; distortion <0.5%; latency <3ms; 10 working channels (CH01-CH10).?Support 10 sets at max for Simultaneously Using(Each Set Using In Different Channel). BATTERY AND DISPLAY:No need to set! No need to buy batteries!The chargeable receiver is built-in 1200mAh battery for 12 hours use time when fully charged . The microphone come with 2 AA 2350mAh alkaline batteries. The display can show the battery power and signal strength in real time, don't worry about Suddenly not working. PRO DUAL WIRELESS MICROPHONES:Built-in high sensitivity professional Dynamic Bidirectional microphone core,adopts metal aluminum tube, and the net head is made of metal baking varnish, which is safe and fall-proof and durable.Transmission distance indoor range >50ft(Outdoor range >100ft);Enhance Signal stability,No delay,No radiation,Anti-howling, Anti-jamming,Constant frequency.