Advanced thumb control: The MX Ergo S Advanced wireless trackball mouse gives more control with less movement; switch between speed and high-precision tracking at the tap of a button 20-degree tilt: A wireless ergonomic mouse with a tilt angle for better forearm posture, reducing muscle strain by 27% (1); now with 80% quieter clicks (5) Contoured for your hand: The MX Ergo S is certified by ergonomists for improved comfort, with a sculpted ergonomic design, 20-degree tilt angle, and soft rubber grip; for medium- to large-sized hands Boost your productivity using the Logi Options+ App (2): Experience enhanced control in your daily tasks with 6 customizable buttons, time-saving shortcuts, and Smart Actions Quick USB-C charging: Enjoy up to 24h of use from a 1 min charge or up to 120 days (3) with a full charge; charges with a USB Type C to Type C or USB Type A to Type C cable (not included) Dual wireless connectivity: Connect your rechargeable wireless mouse via Bluetooth or Logi Bolt USB receiver (included); switch between computers with a tap of the Easy-Switch button Made with recycled plastic: The plastic parts in the MX Ergo S wireless rechargeable mouse are made of 20% certified post-consumer recycled plastic (4) Complete your advanced setup: Pair the MX Ergo S with the ERGO K860 ergonomic split-curved keyboard, featuring an integrated cushioned palm rest for all-day comfort