Features: -- Made of premium material, lightweight, sturdy and durable. -- Water resistance feature to ensure safe use on rainy days. -- Displaying time, average speed, maximum speed, distance, etc. -- Easy installation on your bike. -- Ideal for riding lovers. Specification: Size:7.5*4.5CM; Screen size:2.36inch; Daytime:Clear vision, FSTN display, can see the data at any angle; Night:Press the [M] + [S] keys simultaneously in any mode to activate the backlight mode; Press the [M] + [S] keys simultaneously in any mode to activate the backlight mode; Press any key in backlight mode, the backlight is on for 3 seconds; Turn on backlight mode ( LIGHT ON); Turn off backlight mode ( LIGHT OFF); Basic Function: Clock Display (CLOCK); Stopwatch Mode (STOPWATCH); Cycling Mileage (TRIP DISD); RIDE TIME; Maximum Riding Speed ( MAX SPEED); Average Riding Speed (SPEED); Distance Display (TRIP UP); Calories (CALORIE); Total Mileage (TOT DIST); Total Riding Time TOT-TIME); Memory Storage Function (MEMORY); Automatic Cycle Scan Display Function (SCAN); Type: Type A: Base; Type B: handlebar; Type C: no additional handle; Type D: add handle; Package included: Type A / B: 1 x Base Optional; Type C / D / E /F: 1 x Odometer Optional; 1 x Magnet; 1 x Speed Sensor; 1 x Instruction Manual; 1 x Base Silicone Pad; 1 x Sensor Rubber Pad; 1 x  Base Optional; 4 x Tie Band