Features1Waterproof design, suitable for all weather conditions. 2LED backlight for clear visibility, even in low light. 3Features speedometer and odometer to track your Cycle speed and distance. 4Includes a calorie counter to monitor your fitness progress. 5Displays temperature in both Celsius and Fahrenheit.SpecificationThis waterproof bike computer features a LED backlight, speedometer, odometer, calorie counter, and temperature display. It's the tool for tracking your Cycle progress and fitness goals. Features:Waterproof design, suitable for all weather conditions. LED backlight for clear visibility, even in low light. Features speedometer and odometer to track your Cycle speed and distance. Includes a calorie counter to monitor your fitness progress. Displays temperature in both Celsius and Fahrenheit. Specifications:Model: Wired/ Wiredless(Optional) Size: 6.5*3.2*1.5cm/2.6*1.3*0.6in Weight: Wireless model - 132g / 4.7oz, Wired model - 102g / 3.6oz Package list:1 x Bike Computer 1 x Set AccessoriesPackage List1 x Bike Computer 1 x Set Accessories