Customizable text size. Customizable time and date format. Customizable background color, text color. Charge display. Built-in 13 fonts. Brightness setting. 1. Enter the APP anywhere long touch to open the setting dialog. 2. Time Formatting: HH: hour Hh: hour Mm: minutes. Ss: seconds. A: AM, PM. 3. Date format setting: yyyy: year. MM: month. Dd: day.