$4 with coupon for SunDing SD – 568AE 23 Functions Bike Computer from GEARBEST
Water Resistant Bike Odometer Speedometer with LCD Backlight Features: - Multifunctional wired bicycle speedometer, includes all vital functions for novices and pros alike. - Real-time display of the current speed, odometer, trip distance, maximum speed, average speed, elapsed time, temperature, calories, ...