Available shapes include vertical ergonomic designs (examples show tilts around 57°–60°), contoured palm-style bodies, and thumb-operated trackball layouts. Listings indicate both right- and left-handed models and mention small-to-medium hand fits for some designs.
Common features include programmable/customizable buttons with companion remapping software, adjustable DPI settings, multi-device pairing or quick-switching, specialized scroll modes, and tunable weight systems on some high-performance models.
