Dyson's Ball technology is primarily associated with their upright vacuum cleaners, rather than handheld vacuum cleaners. The Ball technology is designed to enhance maneuverability and improve the vacuum's ability to turn and pivot smoothly.
In Dyson's upright vacuum cleaners, the Ball technology replaces the traditional fixed wheels with a large spherical ball that houses the motor and components necessary for the vacuum's operation. This ball design allows the vacuum to swivel and rotate freely on its axis, providing greater mobility and agility when navigating around furniture and obstacles. As a result, users can steer the vacuum with greater ease and control, making it more effortless to clean around tight spaces and corners.
For Dyson's handheld vacuum cleaners, they typically rely on a different set of technologies and design features to ensure portability, lightweight, and powerful suction. While I don't have information on any specific "Ball" technology used in their handheld vacuums, they might incorporate other innovations such as high-performance batteries, cyclonic technology, and a variety of attachments to cater to different cleaning needs.
For the most up-to-date and accurate information on Dyson's handheld vacuum cleaners and any new technologies they might have introduced, I recommend checking the official Dyson website or product documentation.