821mhz audio guide system for museums

{"cid":"91171271","title":"Wireless 158 Channel Museum Audio Guide System Sound Amplification Technology","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/b5\/3e\/28aedf571007011b8000c3dca051-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"YingMi","Model Number":"008A","Minimum Order Quantity":"1 pcs","Delivery Time":"3-7 days","Certification":"CE,RoHs","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"10000pcs for one month","Packaging Details":"packed in carton box","Oscillato":"PLL","Storage channel":"158","Frequency range":"796-821MHz","Dimensions":"65*50*17mm","Color":"Black","Warranty":"2 years","Application":"factory visits\/museums and so on","Type":"008A","Weight":"50g","Brand":"YingMi"}}