Feature: Night light: you can also see the information on the computer at night. Specification: Main material: plastic Product color: Black Package size: about 100x80x40mm/3.93*3.15*1.57in Gross weight: About 80g Language: English Power supply: CR2030 button battery (built-in) Main functions: Real time speed, CLOCK, TRIP, RIDETM time, AVSPD, MAXSPD and ODO Expanded functions: Stopwatch function (STW), instant temperature display (TEMP), minimum temperature (MNTEMP), maximum temperature (MXTEMP), instant calorie consumption (CAL), total calorie consumption (KCAL), FAT burning (FAT), target distance up setting (KM+), riding time up setting (TIME+), turning on scanning mode (SCAN distance,riding time, average speed) Tip: if all expansion functions are turned off, they will not be displayed in the main mode (all are turned off by default) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. 1 X Bicycle Computer 1 Set X Accessories