Powerchairs usually look like traditional wheelchairs. Some models look identical to a traditional wheelchair, the only difference being batteries and a motor attached to each wheel. The chair is operated using one hand by a joystick control on the arm of the chair. People who use powerchairs tend to spend more time in their chairs than people who use scooters. Powerchairs are usually more adaptable than disabled scooters, and some models can have specialist seats and controllers fitted to suit the unique requirements of the user.