Usage Tips:, Clear Display: High resolution, backlit display is easy to read even in direct sunlight or in the dark. With the touch of a button, you can scroll through the different functions. High-precision data: Improved programs and optimized chip materials allow you to reliable data on speed (DSP, , ), distance (ODO, DSP), time and more on every . Automatic function: If you do not press any button in the power-on state and drive forward 5 meters, the bicycle computer will automatically wake up wirelessly and remember the previous value. Low battery reminder: When the voltage of the sensor or bicycle computer is lower than 2.5V, a low battery reminder symbol will appear to avoid sudden stop working. Just replace the battery in time to work again. Comes with Battery and Installation Instructions: This bicycle speedometer includes detailed installation instructions (English), CR2032 battery and other accessories for easy installation. Note:This bicycle computer is not suitable for electric bicycles Colour:As Shown Material:ABS Size:5.6x4.1x2 cm Package Contents: 1 * Cycling Computer 1 * Wireless sensor 1 * 4 * Plastic tie-wrap 1 * Elastic 1 * CR2032 battery 1 * 23A battery 1 * Magnet 1 * English User manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.