Office Trackball 2000 DPI Blue, Graphite Right-hand RF Wireless + Bluetooth 10 m Scroll type: Wheel Buttons quantity: 5 Power source: Batteries 1 AA Mouse Bluetooth Low Energy (BLE) Yes Polling rate 88,133 Hz Response time 11.25 ms Silent click Yes Buttons durability (million clicks) 3 Button functions Back, Forward Number of programmable buttons 3 Programmable mouse buttons Yes Buttons type Pressed buttons Buttons quantity 5 Scrolling directions Vertical Number of scroll wheels 1 Scroll type Wheel Movement resolution 2000 DPI Movement detection technology Trackball Device interface RF Wireless + Bluetooth Purpose Office Design Material Acrylonitrile butadiene styrene (ABS) Surface coloration Monochromatic Product colour Blue, Graphite Ergonomic design Yes Form factor Right-hand Ergonomics Wireless range 10 m Power Service life of battery 18 month(s) USB Type-C charging port No USB Power Delivery (USB PD) No Battery type AA Number of batteries supported 1 Power source Batteries System