Photo 1 of ***Tested, USB dongle in the battery compartment, 1.5V AAA batteries not include*** SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons, 1000/1600/2400 DPl, Compati

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Photo 1 of ***Tested, USB dongle in the battery compartment, 1.5V AAA batteries not include*** SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons, 1000/1600/2400 DPl, CompatiPhoto 2 of ***Tested, USB dongle in the battery compartment, 1.5V AAA batteries not include*** SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons, 1000/1600/2400 DPl, CompatiPhoto 3 of ***Tested, USB dongle in the battery compartment, 1.5V AAA batteries not include*** SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons, 1000/1600/2400 DPl, CompatiPhoto 4 of ***Tested, USB dongle in the battery compartment, 1.5V AAA batteries not include*** SANWA Bluetooth 5.1 + 2.4 G Wireless Ergonomic Trackball Mouse, Finger Control Roller Ball Mouse, 3 Device Switch, Silent Programmable Buttons, 1000/1600/2400 DPl, Compati