Material: ABSSize: 44*53*18MMType: ElectronicScope of application: Bicycle， Electric cars， Motorcycle， mountain bikeBattery: High-capacity Lithium Manganese batteryNote: Car's wheel diameter 10.00CM-99.99CM(4-inch to 40-inch) can be use.Features1， MAINTENANCE ALERT2， LOW-SPEED REMINDER3， OVERSPEED REMINDER4， FREEZE FRAME MEMORY5， LCD BACKLIGHT6， LOW BATTERY INDICATOR7， TEMPERATURE8， CLK CLOCK£¨12H/24H£©9， SW STOPWATCH10， TM UP TRIP TIME UP11， TM DN TRIP TIME DOWN12， TRIP UP TRIP DISTANCE UP13， TRIP DN TRIP DISTANCE DOWN14， ¡°+¡± ¡°£­¡± COMPAPATOR15， SETTING SPEED SCALE£¨km/h，m/h£©