peripro 506 small keyboard 4GHz wireless connection with a

4GHz wireless connection with a USB receiver

55 inches optical trackball with mouse function and left and right click for fluid screen navigation and selections

Favorable and Comfortable

4GHz wireless connectivity

Fn & Fn Lock Convenience: Dedicated Fn and Fn Lock keys offer flexible input options

peripro 506 small keyboard 4GHz wireless connection with aErgonomic Design A wired 3 button tracking device for cursor control and screen navigation; Dimension: 3. 94 x 6. 61 x 1. 65 inches (10 x 16. 8 x 4. 2 cm); Stationary tracking which reduces hand and forearm movements and design to help users with RSI or carpel tunnel syndrome Trackball Comfort A durable 0. 98 inch (25 mm) diameter trackball with optical tracking technology to provide precise cursor control; 400 DPI Wired USB Connectivity Easy