[Multi-function] : LCD digital display can clearly read all the basic data you need, such as speed, distance and travel time. The 16 functions of the bicycle speedometer will meet your different cycling needs, you can enjoy the fun of cycling.[Special design] : Waterproof design makes it more durable. The bike computers silhouette is simple and cool, and coupled with the waterproof design, it will always be stylish and new.[Convenient and fast] : Practical and fast record speed and mileage, no delay. When riding again, you can pick up the bike computer with a single click and immediately start your journey.[Clear data and backlit design] : The LCD display has no reflective blind spots, and the backlit LCD design makes it easy to read data even at night.[Easy to install] : Wireless design makes installation more convenient. The instructions are enclosed in the package. If you have any questions before ordering or during using, please contact us directly. We will always provide help for you.Every rider should have a bicycle computer.Speed record function allows the rider to good control and distribution of energy, mileage and time recording function, and can provide the basis for the rider complete plan or a new direction.Package:1 x bike computer1 X sensor1 x magnet1 x Mounting bracket1 x CR2032 battery4 x Cable ties1 x elastic band1 x instruction