EM04 Ergonomic Bluetooth Trackball Mouse

DIMENSIONS EM04 Trackball Mouse Length: 5.39 in (136.8 mm) Width: 3.96 in (100.5 mm) Height: 2.06 in (52.3 mm) Weight: 4.2 oz (119 g) SYSTEM REQUIREMENTS USB Receiver Required: Available USB port Windows XP, Windows 7, Windows 8, Windows 10 or higher version, Linux , Mac OS x 10.10 or higher version Bluetooth Required: Bluetooth Low Energy Windows 8, Windows 10 or higher version, Linux, Mac OS x 10.10 or higher version, Android 4.3 or higher version TECHNICAL SPECIFICATIONS Sensor technology ProtoArc Advanced Optical Tracking Minimal and maximal value: 200/400/800/1200/1600 dpi Buttons Number of buttons: 6 Note: all the buttons are non-programmable and the back forward buttons are not com