The Prince Portable includes all of the features of the Little Prince but also includes more ball capacity, longer battery life, and variable spin control. Standard Features include variable speed control (10-70 MPH), variable spin control, variable feed rate (2-13 sec.), manual elevation control (ground stroke to lob), random sweep with fixed sweep width, and it has a 300 ball capacity. All 4 models are available in battery or electric power versions. Standard battery life is 4-6 hrs on full charge. Model 2 also includes manually adjusted sweep control and electronically adjusted elevation control. Model 3 also includes one-function remote control. Model 4 also includes electronically adjusted sweep control, two-line drill, and ten- function remote control.