electronic mechanic stethoscope with magnetic base

{"cid":"91150510","title":"HG-120 Electronic Mechanic Stethoscope 10Hz-10KHz Vibration Noise Analyzer Bearing Gear Engine Fault Detector With Magnetic Base Probe","imgUrl":"https:\/\/img.chinax.com\/nimg\/3a\/6f\/f265213f8ee54f8be3e39c90f1ee-200x200-1.jpg","attrs":{"Price":"USD178\/set - USD201\/set","Brand Name":"HUATEC","Model Number":"HG-120","Minimum Order Quantity":"1 pc","Delivery Time":"7-10 working days after receipt of your payment","Payment Terms":"T\/T,Paypal","Input Impedance":"> 20 M","Power supply":"4 x 1.5V AAA size (UM-4) Battery","Certification":"CE","Ambient Noise permitted":"100 dB","Place of Origin":"China","Packaging Details":"Carton packing box","Supply Ability":"10sets\/Month","Frequency range":"10~10K Hz"}}

{"cid":"91190311","title":"Rare Earth Custom Neodymium Magnets Cylinder For Mobile Phone","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/da\/3754568e5b11653f242f54de1082-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"VISION","Model Number":"N35 - N52","Minimum Order Quantity":"3 pcs","Delivery Time":"5 - 15 work days","Place of Origin":"People's republic of China","Certification":"ISO9001:2008; Rohs, Reach, SGS","Supply Ability":"10000 Pieces per Day","Packaging Details":"1 piece","Payment Terms":"negotiable","Type":"Permanent","Composite":"Neodymium Magnet","Shape":"Cylinder Ring","Application":"Industrial Magnet","Coating":"Nickel or customized","Material":"Sintered Neodymium-Iron-Boron","Size":"Customers' Request","Magnetism direction":"diametrically magnetized or customized","Tolerance":"+\/-0.05mm or +\/-0.1mm","Processing":"sintered permanent neodymium magnet","Port":"Shenzhen or customer' request"}}