Large, 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- data: Improved programs and optimized chip materials allow you to reliable data on speed (, , ), distance (ODO, ), time and more on every ride. Automatic wake-up function: If you do not any button in the power-on state and drive forward 5 meters, the bicycle computer 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 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: 2 x Cycling Computer 2 x Wireless sensor 2 x Seat 8 x Plastic tie-wrap 2 x Elastic 2 x CR2032 battery 2 x 23A battery 2 x Magnet 2 x 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.