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

0 INTERFACE WITH LONG CABLE: Equipped with a reliable USB 2

Kensington TrackMan Wheel (excluding Trackman Marble)

Mouse automatically enters power saving mode after 10 seconds of being sleeping mode

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