Simple programming and operation. Automatically advances year, month, date and Daylight Saving Time. Prints time in regular or military time; AM or PM, 0-23 hours, minutes, tenths or hundredths. Accommodates weekly, bi-weekly, semi-monthly and monthly payrol. Automatic IN/OUT positioning at the pre-programmed time. Automatic card feed/standard.Two color printing to show irregular time. Built-in signal device. Surface detection function for correct printing position.High-quality dot matrix printer for clean, clear printing.Large, easy to read clock dial.Battery backup.Table or wall mount.Clock and Programming data kept for 3 years without AC power