Cycle Computers Wireless Cycle Computer Bike Speedometer Bicycle Speedometer Cadence Sensor Wireless Cycle Computers Speedometer <p>100% plastic</p> <p>Backlight: The unique design of the bicycle stopwatch with its own night light display, green and white distinguish between day and night. You can easily turn on the light by pressing a button. It can only be kept for a few seconds, if you still need to turn on the night light, just press it again. Allows you to easily read the data while riding.</p> <p>WATERPROOF : This advance cycling computer is designed with backlight for night riding and waterproof against raining and wet condition. Works anytime and any weather!</p> <p>High cost performance: The bicycle computer adopts a unique style design, and the built-in night light display allows you to read the data clearly while riding at night. Moreover, it is small in size, light in weight, waterproof and durable, and extremely cost-effective.</p> <p>DATA STORAGE TRANSMISSION: The digital transmission mode of the bicycle computer code meter allows you to quickly confirm or transfer data without any interference at any time and any place.</p>