Adesso WKB-3100UB Wireless Mini Trackball Keyboard - Compact 87-Key Layout, Built-In 800 DPI Optical Trackball, 24GHz RF Wireless Technology, USB.

Wireless Freedom: Enjoy up to 30 feet of wireless control with 2.4 GHz RF technology; no cables, no clutter; ideal for home offices, kiosks, and POS stations Integrated Trackball: Built-in 800 DPI optical trackball provides precise cursor control; eliminates the need for a separate mouse; saves valuable desk space; requires no maintenance Compact Design: 87-key layout with embedded numeric keypad; only 11.75 inches wide; fits easily into small workspaces, briefcases, or backpacks; perfect for mobile use Durable & Reliable: Membrane switch type with a 5-million-cycle lifespan; designed for long-term use in various environments; includes 65,000 wireless IDs for secure, interference-free connection