Description: [MULTIFUNCTIONAL] Bike Computer can keep track of your workout progress with the digital display that shows time, speed, distance, calories(Only Fits for X BIKES, NOT Universal) [HEART RATE MONITORS] Optional: Black With heart rate monitors, Yellow Without heart rate monitors, choose according to your need. The heart rate monitors feature allows you to monitors your heart rate and maintain a safe and effective exercise routine. [EASY INSTALLATION] The digital display is easy to install and fits for most exercise bikes and treadmills. [STURDY DESIGN] The counter is made with pp materials that are built to last and withstand rigorous exercise routines. [UNIVERSAL COMPATIBILITY] The exercise bike computer is fits for a wide range of exercise equipment brands and models exercise bikes, stationary bike. Specification: Material: PP Optional: Black color with Heart Rate Monitors / Yellow color WITHOUT Heart Rate Monitors Size Chart: 20cmx20.3cm/7.87inchx7.99inch Package Includes: 1 Piece Bike Speedometers Note: (Only Fits for X BIKES, NOT Universal)