Advanced Ergonomic Design – Places your hand in a natural handshake position using a unique 57-degree angle, preventing forearm twisting and reducing muscular strain by 10 percent* (*Based on Logitech Study, September 2017) Hyper-efficient Tracking – 4000 dpi high-precision sensor provides precise tracking that requires 4X less hand movement compared to a traditional mouse with a 1000 dpi sensor Cross-computer Control – Game-changing capacity to navigate seamlessly on three computers, and copy-paste text, images, and files from one to the other using Logitech FLOW Three Ways to Connect – Use with up to three Windows or Mac computers via included wireless USB unifying receiver or Bluetooth smart technology or the included USB-C charging cable Rechargeable Battery – With quick charging: Stays powered for 4 months on a full charge – and get 3 hours of use from a 1-minute quick charge (Battery life may vary based computing conditions).