Office Optical 4000 DPI Graphite Right-hand RF Wireless + Bluetooth 10 m Scroll type: Wheel Buttons quantity: 5 Rubber grips Power source: Batteries 1 AA Alkaline Mouse Bluetooth Low Energy (BLE) Yes Silent click Yes Button functions Forward Buttons type Pressed buttons Buttons quantity 5 Scrolling directions Vertical Number of scroll wheels 1 Scroll type Wheel Movement resolution 4000 DPI Movement detection technology Optical Device interface RF Wireless + Bluetooth Purpose Office Design Rubber grips Yes Surface coloration Monochromatic Product colour Graphite Ergonomic design Yes Form factor Right-hand Ergonomics Wireless range 10 m On/off switch Yes Power Service life of battery 24 month(s) USB Type-C charging port No USB Power Delivery (USB PD) No Battery technology Alkaline Battery type AA Number of batteries supported 1 Power source Batteries System requirements Other operating systems supported ChromeOS Mobile operating systems supported Android 8.0, iPadOS Linux operating syste