[LCD DISPLAY SPEEDOMETER] - Bike odometer computer records average speed, maximum speed, current speed mph / kph, riding time, odometer, one-way travel distance to effectively track your ride, with scan mode, speed comparator, maintenance , More functional time of the trip, etc. A sensitive sensor with a magnet can accurately track the speed of the bicycle. The bright LCD display makes it easy to view ride statistics. [USB RECHARGEABLE BIKE LIGHT] Our bike front light and bicycle speedometer odometer come with the USB rechargeable function, it's built-in 1500mAh lithium battery, all you need is a USB cord and a power source to recharge (Computer, laptop or a cellphone charger), which makes them a substitute for disposable batteries and protects the environment. [Horn and Bicycle Tail Light]Switch six sound modes in one button:chirp,tweets,whistle,trumpet,voice alerts.Bike Speedometer is IP65 waterproof, It is making your bicycle stand out with unmatched 360º visibility, Up to 50 meters in distance like low beam safety lighting with a wide angle view. [Waterproof Bicycle Light] Bike front light is made of high quality ABS material,IPX65 rated,the surface of piano paint technology, strong and durable. The rear light is IPX4 waterproof, which means no need to release it if you get caught in the rain. [We Promise]Lf you have any problem, please feel free to contact us via amazon email. If you are a person who like cycling trip or other outdoor activities, this Bike Speedometer set is the better choice to improve your visibility and safety.