Features:Multifunctional， includes all vital functions for novices and pros alike.Easy to read， big four-line backlit LCD display.Durable and waterproof for use in all conditions， can be totally soaked in water.Easy installation， no tools required.Powered by CR2032 battery.Ideal companion for your riding.Note: After being soaked in water， please wait a moment before pressing any button.Functions:1.SPD CURRENT SPEED2.ODO ODOMETER3.DST TRIP DISTANCE4.MAX MAXIMUM SPEED5.AVS AVERAGE SPEED6.TTM TOTOL TRIP TIME7.TM TRIP TIME8.RAT RIDING ALL TIME9.CLK CLOCK / (12H/24H)10.SW STOPWATCH11.TEMPERATURE12.TM UP TRIP TIME UP13.TM DN TRIP TIME DOWN14.TRIP UP TRIP DISTANCE UP15.TRIP DN TRIP DISTANCE DOWN16.COMPARATOR17.MAINTENANCE ALERT18.MACHINE OIL REMINDER19.OVER-SPEED REMINDER20.SEETING TYRE CIRCUMFERENCE21.SEETING RAT22.LOW BATTERY INDICATOR23.FREEZE FRAME MEMORY24.AUTO BACK LIGHT25.WIRELESS DIGITAL CODE26.AUTO LIGHT27.SEPERATED BUTTON28.AUTO ON/OFFSpecifications:Power source: CR2032 batteryDimensions: 5.5 * 4 * 1.7cm / 2.2 * 1.6 * 0.7inLCD Screen: 3 * 3.3cm / 1.2 * 1.3inPackage size: 14 * 7 * 4cm / 5.5 * 2.8 * 1.6inPackage weight: 92g / 3.3ozPackage List: 1 * LCD Bicycle Computer1 * Sensor Transmitter1 * Mounting Shoe1 * Wheel Magnet1 * Set of Cable Ties1 * User Manual(English)