Description Are you looking for a professional, yet affordable bike computer? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional bike stopwatch must meet your needs. It is one of the best choices for you. Features -Color: Black, Red -Material: ABS -Size: 4.50X4.50X2.00cm/1.77X1.77X0.79in -Note: Powered by button battery(Included) - Made of high-class plastic material, it is lightweight, sturdy and durable. - Perfect waterproof grade to ensure your safe use in rainy days. - Full functions, displaying time, average speeds, maximum speeds, distance, etc. - Mild waterproof grade, the waterproof performance keeps it moving in rainy days. - The backlight odometer, which helps to easily and clearly view your cycling data . Made of high-class plastic material, it is lightweight, sturdy and durable. Perfect waterproof grade to ensure your safe use in rainy days. Full functions, displaying time, average speeds, maximum speeds, distance, etc. Mild waterproof grade, the waterproof performance keeps it moving in rainy days. The backlight odometer, which helps to easily and clearly view your cycling data .