MUCH Wireless Waterproof LCD Bike Computer Odometer Speedometer with Multi Function and LCD Backlight Water Resistance, durable in nature, Compact in nature It is fully waterproof so you can easily use it on any weather. If it rains you won't have any tension. The wireless working comes to great help It comes with a LCD screen which shows almost everything from speed, distance, maximum speed, relative speed, total distance speed comparator etc. The screen is clear and offers crisp visibility Compact, Lightweight, Easy to install. Easy instruction for installing and set up in user manual The magnetic head cycle passing the "sensor ", please adjust the distance between the Magnetic Head and "SENSOR" to be within 2 MM