Features1Multi function wireless LCD bike wireless odometer, it is easy to install and operate. 2The screen is bright and clearly shows time, speed, distance, rhythm and heart rate. 3The computer is made of high quality ABS material, light weight, easy to carry, waterproof, high and low temperature resistance. 4In addition, built in 200mah lithium battery, long battery life and durable. 5To prevent bicycle theft, a new alarm function is added. Press and hold the switch for three seconds to turn on the alarm mode. Then, it will enter the armed state and touch the car to sound the alarm.SpecificationItem Type: Bike Wireless OdometerModel: BC235Mode: OSO Accumulates Bike Distance 1 Or 2 TO Accumulate The Bike Distance Of 1 Plus 2 DST Records And Accumulates Daily Cycling Distances, Average / MaximumSpeed: Speed And Tilt Speed ComparatorClock: Cycling TimeTemperature: Calories Burned And Fett BurnedScan FunctionRhythm Mode: Current / Average / Maximum Pedal Frequency, Scan FunctionHeart Rate MODE: Current / Maximum / Minimum Heart Rate, Warning Of Target Area And Target Area, Scan FunctionMaterial: ABSWeight: Approx.130g / 4.6ozBattery: Lithium Manganese Button BatteryBattery Model: 3 x CR2032 Battery (Built In Battery Delivery)Battery Capacity: 200mAhDisplay Size: 6.6 x 4.7 x 2cm / 2.6 x 1.9 x 0.8inSensor Size: 3.5 x 4cm / 1.4 x 1.6inPackage Size: 15.2 x 14 x 4cm / 6.0 x 5.5 x 1.6inPackage List1 x Bicycle Wireless Code Table1 x Manual8 x Cable Tie1 x Installation Guide Manual1 x Speed Sensor1 x Sensor Sponge Pad1 x Base1 x Base Rubber Pad1 x Connection Sensor Pad1 x Accessories