Full-size vertical design supports all-day comfort and productivity. Minimum 57% post-consumer recycled plastic content. Connect up to 3 devices through Bluetooth 5.4 and the included 2.4GHz USB-A receiver. Up to 4 months of battery life per charge. Includes 5-button navigation, silent switches and a DPI control button. 128-bit AES encryption. 3-year limited warranty.