Description: Since it is made of premium plastic material, it is ultralight and adds no extra weight to your bike. Featuring simple installation and disassembly, it is more convenient to use. Good performance makes it possible to adjust the riding intensity at any time according to different situations. High sensitivity and stable signal make it very reliable and practical. It is constructed of plastic material. The length of boost sensor is 5.4cm and the width is 4.4cm. The length of line is about 1m. It is suitable for retrofitting, electric bicycle, mountain bike and so on. Item Name: Boost Sensor Material: Plastic Color: Black Specification: 12 Magnetic Installation Location: Left Side Features: High Sensitivity, Simple Installation, Good Performance Size Details: Boost Sensor: 5.4cm x 4.4cm/2.13" x 1.73" (Approx.) Line Length: 100cm/39.37" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Boost Sensor (with Line)