Wireless Mic System Work Range About 20m(65ft)-30m(98ft).Bluetooth Connect Distance About 10m(32ft).Mic A&B Have Adjustment of 50 Channel.Can support 10-20 sets of Wireless microphone System to use at the same time.?No Need To Set! Just Plug And Use! Perfect For Karaoke, Speech, Meeting, Party, Church, Wedding, Dj, Preaching,Performance, Indoor Or Outdoor.What’S In The Package:1 X Mini Receiver ; 2 X Wireless Microphone; 1 X 2 in 1 Wireless Microphone Charge Cable ;1 X Mic Receiver Cahrge Cable ; 1 X 3.5mm To 6.35mm Adapter;2 X Sponge Net; 2 X Antiskid Ring ; 1 X User Manual. Reminder: This Rechargeable Microphone Has No Volume Adjustment Function, And Needs To Be Adjusted On The Linked Audio Output Device. If You Find No Sound From The Mic, You Need To Re-Pair.1.Turn On The Receiver And Turn Off Mic First.Make Sure Both Mic And Receiver Within 20" Distance.2.Hold Down The Channel Set Button Of Mic First And Press Power Button Of Mic.When Screen Shows"----"Release Both Buttons And Waitfor Seconds.Lf"-----" Disappears, It Means Pairing Is Successful. If You Use Multiple Mic At The Same Time or Reduce Noise, Please Set Switch(click the“Set”button), Make sure each mic channel number is different and the channel numbers are far apart.Suitable for Conference, Speech, Outdoor, Church, Family Party, Open Ceremony, Dancing Instructor, Promotion,Preaching Etc. Microphone System Supports 3.5mm Of Aux Interface And 6.35mm Of Mic Interface Devices, Plug And Play, Automatic Lock Screen And Automatic Connection After Startup, Suitable For Home Theater, Ktv Equipment, Pa Speaker , Audio Interface , Audio Mixer, Automobile Speaker, Amplifier, Active Speaker, Sound Card , Bluetooth Speaker And So On.Please Do Not Jack Input to Phone, Pc, Cameras And Tv, There Is Noise And Cannot Be Used Normally. Microphone Led Display Show Of Battery Power Of Mic/500-598 Mhz Of Frequency Band / Distinguish Of Ch A /Ch B And Signal;Receiver Light Display Show Ch A / B Rf / Power On/Off Of Receiver And Battery Power Of Receiver Can Better Understand The Working Situation Of The Microphone. Mic A&B And Receiver Work Range Within 96ft / 30m ,Bluetooth Device And The Receiver Connect Within 32ft / 10m (Bluetooth Name:X168)As Music Player.The Music Is Mixed With The Singer'S Singing Output To The Mixer Or Speaker, Which Can Better Display The Effect Of The Device. Mic Used For Uhf Technology And Adjustment Of 50 Channel, And 10-20 Sets Of Microphone Systems Can Be Used At The Same Time. Rechargeable Microphone System Has Microphone Built-In 1500mah Lithium Ion Battery, Which Can Be Used For 8-10 Hours After Charging For 2-3 Hours;The Receiver Has A Built-In 1000mah Lithium Polymer Battery, Which Can Be Used For 5-6 Hours After Charging For 2-3 Hours.