Pebble Mouse 2 M350s improvements vs M350: latest Bluetooth 5.1 with added support for Logitech Bolt receiver; can pair up to three devices instead of two; customizable middle button that supports shortcuts (ex. Emoji menu dictation gesture etc) Pebble Mouse 2 M350s improvements vs M350: APP profiles shortcuts for apps (ex.WhatsApp Spotify etc); 4000 DPI sensor vs 1000 DPI sensor; 2-year battery life (vs 18 months); Logi Options+ support (APP profiles low battery notifications etc) Easily Hop Across 3 Devices: Use Bluetooth to connect up to 3 wireless devices across OSs (Windows macOS iPadOS ChromeOS) and switch between them with the mouse