Bicycle Computers features: Scandinavian Inspired Style Waterproof Large Screen Bicycle Speedometer And Stopwatch With Backlight And A Wireless True Sensor Attachment(C Red) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour: C red These expertly crafted Scandinavian inspired bicycle speedometers are an absolute must have for all biking enthusiasts, Ideal for both personal and professional use. What catches your eye is that the body build is smaller than a bank card making it portable yet features a clear, readable and highly visible data display screen with backlighting. Clutter free humanised deign with only two lines of display and only two buttons (which can be selected by pressing the left key as a long press). Not only ensures that you can easily read the data on the screen while riding, but also enhances the safety of of the rider. Automatically read cyclic data, with 7-day memory and automatic power on/off function, no need to fiddle with buttons or waste battery power. The device can track your speed through the top display of the current speed, as well as the bottom display of the maximum and average speeds. It also has a relative speed indicator which visually checks whether it is running faster than average Built-in white backlight, providing night and low visibility viewing efficiency. Keeping the display readable in low light makes it easy to read all the data clearly that to be your good companion when riding at night. The back light will turn on when you press both buttons at the same time. Other Functions: Measured mileage, accumulated distance, travel time, total time, clock, stopwatch, temperature, etc The speedometer true sensor can be easily mounted on the bicycle's front wheel, with a distance of less than 60cm from the speed sensor and a gap of 1.5mm from the magnet, enabling accurate speed tracking and automatic recording sync. Suitable for most types of bicycles: Road bicycles, mountain bikes, folding bikes and other common bicycles Certification: CE Weight: 32g(Net);88g(Gross) Power Supply: Battery CR2032H Fitting position: Bicycle handlebar Color: Red