The design of the mouse is based on the contours of your hand for a comfortable palm rest, so you can work efficiently and comfortably. A horizontal mouse wheel for your thumb enables intuitive navigation from left to right, while the vertical mouse wheel at the top of the mouse allows you to scroll quickly through long documents and web pages or scroll precisely thanks to the notches. With the track-on-glass sensor, you can easily work anywhere, both on the glass table in the café and on the wooden bench in the park. The DPI is adjustable in steps of 200 DPI from 800 to 8000 DPI, so you can customise the mouse to your preferences. The mouse's ultra-smooth gliding feet ensure smooth and silent mouse movements for a more satisfying user experience. With 2.4 GHz RF and Bluetooth 5.1 connectivity, you can easily connect and switch between up to 3 devices (two via Bluetooth and one via RF dongle). Dell Pair is the easy and secure way to connect to your accessories. This software meets the most stringent security standard for Bluetooth Low Energy pairing of the mouse and accessories are automatically recognised and can be paired with just one click. From the enhanced pairing experience with Dell Pair to the updated Dell Secure Link USB receiver, the MS900 has been designed with security in mind. Transmission is encrypted to protect your data. A charge of just two minutes allows for all-day use and a full charge lasts up to three months with USB-C charging. This means fewer batteries are needed, which in turn means less waste.