20 x 4 LCD, 5 volt, based on the popular HD44780. White characters on blue background, with back light. 4 rows, 20 characters per row.
We even include the header pins and a resistor for the contrast pin. We're good like that.
Here is the datasheet.
Are you going to use this LCD with an Arduino board? Check out our Arduino LCD tutorial for step-by-step instructions.