Description：Color: BlackWeight: About 25 gSize: About 46mm x 46mm x 19 mmMaterial: Plastic electronic componentsEasy to use and lightweght with portable designNote: Contains button batteries (not include 23A 12 V batteries)Usage Tips1.The distance between computer unit and sensor not exceeded more than 60cm, then the distance between sensor and magnet not more than 2.5mm, the less the better.2.Please read the instructions carefully before installation, then install it only on the front wheel.3.Waterproof- Riding no need to worry about rain, but don't put in the rainstorm or soak in water.4.The circumference ranges is 0mm¡«9999mm (Normal wheel circumference have been offer in the user manual). If the cycle circumference of your bike is not in the chart, measured by yourself or search in Google.Note:Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Meanwhile, please be reminded that due to lighting effects, monitor's brightness / contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item.Package Including1 pc
