Feature 1Electric bicycle speed sensor (known as PAS, wheel-mounted sensor). 2It is a high-tech component designed for electric bicycles with ergonomics. 3It has the superiority to match well with all electric bicycles available on the market. 4It uses the double magnetic loop - Hall elastic angular difference to detect the dynamic torque, which is converted into a DC signal and sent to the controller. 51:1 power assist. Makes cycling easier and more enjoyable. SpecificationFeatures:Electric bicycle speed sensor (known as PAS, wheel-mounted sensor).It is a high-tech component designed for electric bicycles with ergonomics.It has the superiority to match well with all electric bicycles available on the market.It uses the double magnetic loop - Hall elastic angular difference to detect the dynamic torque, which is converted into a DC signal and sent to the controller.1:1 power assist. Makes cycling easier and more enjoyable.Specifications:Condition:Material: SteelMagnets: 12Disk diameter: Approx. 65mm/2.56''Steel ring diameter: Approx. 35mm/1.37''Cable length: Approx. 1.1m/43.3''Weight: Approx. 50gPackage list:1 x Electric Bicycle Assistant Sensor.wang-edit-text{font-family:'Arial'important;}.wang-edit-text table {border-top: 1px solid #000;border-left: 1px solid #000;}.wang-edit-text table td,.wang-edit-text table th {border-bottom: 1px solid #000;border-right: 1px solid #000;padding: 3px 5px;}.wang-edit-text table th {text-align: center;}Note: Please note that the new and old type of this product will be sent randomly, and make sure you do not mind before ordering.