Perimice-717 Wireless Programmable Trackball Mouse - 7 Button Design With 5 Programmable Buttons - Dpi 400/1000

2.4 GHz Wireless ergonomic trackball mouse with 7 buttons ; Built-in two-level DPI, speed and control, easy to switch the cursor speed with dpi switch buttons Natural ergonomic with right-handed design; Recommended to repetitive strain injuries RSI users and the users work particularly long periods on the computer Programmable feature added, personalize your working environment; You can download software by visiting Perixx website Built-in on and off switch button and auto power saving feature; Mouse automatically enters power saving mode after 10 seconds of being sleeping mode, 8-10 minutes of being standby mode System requirements: Windows 7, 8, 10; Wireless 2.4GHz connection with 10 meters operating range Size :Wireless System requirement Windows 7, 8, 10 USB Port You can download software by visiting Perixx website Specification Dimension: 130x107x45 mm Approximate Weight: 134 g (Batteries are not included) Sensor: Laser Trackball Size: 34 mm DPI: 400/1000 Power supply: Two AAA batteries required (Batteries are not included in package) Number of Buttons: 7 Number of Programmable Buttons: 5 Scroll wheel with middle click: Yes Wireless operating distance: 10 m (33 feet) Wireless technology: 2.4GHz, with Nano receiver