Stepper Motor - 24BYJ48 speed/amperage specs

Do you have more information about the “Small Size and High Torque Stepper Motor - 24BYJ48” such as its maximum RPM (or maximum steps per unit time) and how much current it uses at different speeds?

Or, do you have a more complete datasheet for the product?
Who is that actual manufacturer of the motor and do they supply a datasheet?