Features： 1、Multi function wireless LCD bike wireless odometer, it is easy to install and operate. 2、The screen is bright and clearly shows time, speed, distance, rhythm and heart rate. 3、The computer is made of high quality ABS material, light weight, easy to carry, waterproof, high and low temperature resistance. 4、In addition, built in 200mah lithium battery, long battery life and durable. 5、To 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. Specification： Item Type: Bike Wireless Odometer Model: BC235 Mode: OSO Accumulates Bike Distance 1 Or 2            TO Accumulate The Bike Distance Of 1 Plus 2            DST Records And Accumulates Daily Cycling Distances, Average / Maximum Speed: Speed And Tilt Speed Comparator Clock: Cycling Time Temperature: Calories Burned And Fett Burned Scan Function Rhythm Mode: Current / Average / Maximum Pedal Frequency, Scan Function Heart Rate MODE: Current / Maximum / Minimum Heart Rate, Warning Of Target Area And Target Area,  Scan Function Material: ABS Weight: Approx.130g / 4.6oz Battery: Lithium Manganese Button Battery Battery Model: 3 x CR2032 Battery (Built In Battery Delivery) Battery Capacity: 200mAh Display Size: 6.6 x 4.7 x 2cm / 2.6 x 1.9 x 0.8in Sensor Size: 3.5 x 4cm / 1.4 x 1.6in Package Size: 15.2 x 14 x 4cm / 6.0 x 5.5 x 1.6in Package List： 1 x Bicycle Wireless Code Table 1 x Manual 8 x Cable Tie  1 x Installation Guide Manual 1 x Speed Sensor 1 x Sensor Sponge Pad 1 x Base 1 x Base Rubber Pad 1 x Connection Sensor Pad  1 x Accessories