noiseless explanation bluetooth tour guide system

{"cid":"91171271","title":"Simultaneous Interpretation Bluetooth Tour Guide System Noiseless Explanation","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/71\/59\/5065fb72a61ee9778892931ce2d6-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"YingMi","Model Number":"R8","Minimum Order Quantity":"1pcs","Delivery Time":"3-7 days","Certification":"CE,RoHs","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"10000pcs one month","Packaging Details":"packed in carton box","Color":"Black","Brand":"YingMi","Frequency":"860MHz-870MHz","Channel":"100CH","Modulation":"GPSK","Distance":"More than 180m","Working time":">9H","Weight":"55g","Dimensions":"75\u00d750\u00d718mm","Type":"Ear-hanging"}}