With the touch of button on the controller at the end of the hose or on the unit itself, the RoboReel Water Hose Reel can start the flow of water, manage all on/off functions, or retract the hose. It's available in two hose sizes (100 feet of 5/8-inch or 150 feet of 1/2-inch hose) and comes with five nozzles for different watering needs, a sprinkler, and a timer that allows for unattended watering and automatic shut off. The unit is designed to stop rewinding if the hose is obstructed. The motor, which is powered by a 12-volt rechargeable battery (reportedly over 100 retractions on a single charge), turns on to assist when the hose is being extracted. Made of UV-, weather-, and impact-resistant polycarbonate, this piece of equipment has four locking wheels and a tow-rope.