M400, M500, M510, M600, M560, M420, M800, M820. The high-contrast TFT LCD color LCD screen provides clear data for riders to read, even in direct sunlight. The controller buttons are robust and easy to use.The USB port supports mobile device connectivity, communication and GO app to monitor and sync your cycling data. Color: Black (As Pictures Show). The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data.
Also, the each additional item means. The the same color and size. Transit time may be a little delayed because of the. If you have any questions.