The Wave Keys keyboard has a built-in 3-layer palm rest, and its compact design allows you to bring the Signature M550 L mouse closer to the center of your body. Featuring a 4000 dpi optical sensor, an ambidextrous design, and near silent buttons, the wireless mouse complements the keyboard with high precision and comfort. You can pair both to the single included Logi Bolt USB-A receiver in addition to Bluetooth compatible laptops, tablets, and phones and seamlessly switch between them as needed. Use the Logi Options+ App for Windows and macOS to enhance your workflow with custom shortcuts. The Wave Keys is designed to work for up to 3 years from two AAA batteries while the Signature M550 L can operate for up to two years using one AA battery. Graphite.