Look no further. Excellent product quality, that's solidly built. Best of all, its very affordable price. Buy this instant. <br />Model: SD-563A <br />Large LCD screen <br />Material: engineering plastic <br />Head size: 57 x 40 x 17 mm <br />Screen size: 34 x 31 mm <br />Power supply: 1 x 3V CR2032 battery (included) <br />Fuctions: <br />1.SPD - CURRENT SPEED<br />2.ODO - ODOMETER (0-9999KM)<br />3.DST - TRIP DISTANCE<br />4.MAX - MAXIMUN SPEED<br />5.AVS - AVERAGE SPEED<br />6.OTM - TOTOL TRIP TIME <br />7.TM - TRIP TIME<br />8.RTM - RIDING TRIP TIME <br />9.CLK - CLOCK (12H/24H) <br />10.SW - STOP WATCH <br />11.TEMPERTERATURE (-10 degrees C to 50 degrees C) <br />12.TM UP - TRIP TIME UP <br />13..TM DN - TRIP TIME DOWN <br />14.TRIP UP - TRIP DISTANCE UP <br />15.TRIP DN - TRIP DISTANCE DOWN <br />16. "+" "-" COMPARATOR <br />17.MAINTENANCE ALERT <br />18.LOW-SPEED REMINDER <br />19.OVER-SPEED REMINDER <br />20.SEETING TYRE CIRCUMFERENCE (0mm-9999mm) <br />21.SEETING THE LAST VALUE OF ODOMETER <br />22.SETTING OTM <br />23.FREEZE FRAME MEMORY <br />24.AUTO ON/OFF <br />Note: Please install the magnet as close as possible to the sensor. <br />1 x Bicycle computer <br />1 x Magnet <br />1 x Ties kit <br />1 x Data cable <br />1 x English user guide <br />In original package<br /><img src="http://img6.eachbuyer.com/x6/p22/wc84_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x6/p22/wc84_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x6/p22/wc84_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x6/p22/wc84_4.jpg" />