no interference wireless tour guide system

{"cid":"91171271","title":"White Wireless Tour Guide System M7 Auto - Induction Audio Tour Guide Equipment","imgUrl":"https:\/\/img.chinax.com\/nimg\/32\/af\/7e9d5d9f946b8c0cc2d5eff45f17-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"humantek","Model Number":"M7","Minimum Order Quantity":"1pcs","Delivery Time":"7days","Certification":"CE,RoHS","Place of Origin":"China","Payment Terms":"L\/C,Paypal","Supply Ability":"300 pieces per week","Packaging Details":"packed in carton box","Product":"Audio guide device","Color":"White","Feature":"Auto Induction","Dimensions":"5.8*7.5*1.3cm","Power":"Lithium Battery","Application":"Audio guide for museum"}}

{"cid":"91169403","title":"GT-150 competetive cheap price guitar wireless microphone UHF instrument micr\u00f3fon","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/b5\/613531332fd24a49422878c4f693-200x200-1.jpg","attrs":{"Brand Name":"LANSION","Model Number":"GT-150\/wireless microphone","Minimum Order Quantity":"30","Delivery Time":"30-50 days","Place of Origin":"Enping China","Certification":"CE","Packaging Details":"carton box \/ aluminum box","Payment Terms":"T\/T","Style":"instrument wireless microphone","Communication":"Wireless","Use":"guitar microphone"}}