importance of a tour guide

{"title":"Black Wireless Audio Tour Guide Systems 823MHz Long Transmission Distance","imgUrl":"https:\/\/img.chinax.com\/nimg\/07\/be\/1ec96c0d1875dc01519d9e5588c3-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"YingMi","Model Number":"008B","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 for one month","Packaging Details":"packed in carton box","Working frequency":"796.0-821.0MHz","Frequency response":"20Hz-16KHz","Working temperature":"-20\u2103\u2014+70\u2103","Working voltage":"3.0-5.0VDC","Dimensions":"86mm\u00d760mm\u00d719mm","Color":"Black","Working distance":"More than 250m","Warranty":"2 years","Type":"008B","Transmitter weight":"110g"}}

{"title":"Bidirectional 250KHz Tour Guide System Long Transmission Distance","imgUrl":"https:\/\/img.chinax.com\/nimg\/07\/be\/1ec96c0d1875dc01519d9e5588c3-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"YingMi","Model Number":"008B","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 for one month","Packaging Details":"packed in carton box","Frequency response":"20Hz-16KHz","Working frequency":"796.0-821.0MHz","Transmitter power":"15dBm","Channel spacing":"250KHz","Dimensions":"86mm\u00d760mm\u00d719mm","Distortion factor":"<1%","Working distance":">=250m","Warranty":"2 years","Type":"008B","Frequency offset":"<3k"}}

{"title":"14-Seat Yellow And Blue Electric Sightseeing Bus With Air Conditioning 72v Lithium Battery Golf Place 13-Inch Tire","imgUrl":"https:\/\/img.chinax.com\/nimg\/f3\/43\/3a6be62d69cfc595955539b08203-200x200-1.jpg","attrs":{"Price":"3200-4000USD per piece","Brand Name":"Florescence","Model Number":"FNE","Minimum Order Quantity":"1","Delivery Time":"7-15 working days","Certification":"CE","Place of Origin":"China","Payment Terms":"TT or L\/C at sight","Supply Ability":"10000","Packaging Details":"Iron frame + stretch film + wooden box","Material":"Steel frame+Plastic cover","Ground Clearance":"235mm","Tire Size":"13inch","Warranty":"1 Year","Usage":"Golf Place,etc","Charger":"Intelligent Pulse Charger","Car Body":"Steel frame","Color Options":"Multiple","Overall Size":"2500*1350*1980mm","Shipping Time":"7 working days after payment","Type":"Electric","Power Source":"Electric","Braking Distance":"\u22645.0m","Load Capacity":"400kg","Safety":"Seatbelts And Rollover Protection"}}