radio frequency bluetooth tour guide system

{"cid":"91171271","title":"Auto Induction Bluetooth Tour Guide System Adopts Infrared Induction","imgUrl":"https:\/\/img.chinax.com\/nimg\/4b\/e1\/1a6defc2386da0ef95daa4cfc2f1-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"YingMi","Model Number":"I7","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":"1000 pieces per week","Packaging Details":"packed in carton box","Brand":"YingMi","Automatic induction:":"0.5m to 30m","Power supply":"Lithium battery","Languages":"8 language for optional","Exterior":"Ear hook","Working current":"12mA-22mA","Dimensions":"100*60*30mm","Memory capacity":"4G","Weight":"20grams","Storage mode":"Adaptive Flash"}}