Logitech MX Master 2S - Features; Speed Adaptive Scroll Wheel

Logitech® MX Master 2S User Guide
1 – Speed-adaptive scroll wheel
6 – Darkfield high precision sensor
2 – Manual shift button
7 – Easy-Switch & connect button
3 – Gesture button
8 – Battery status LED
4 – Micro USB port
9 – Thumb wheel
5 – On/Off button
10 – Back/forward buttons
Features:
Speed adaptive scroll-wheel
If SmartShift™ is enabled, the speed-adaptive scroll wheel shifts between two scrolling modes
automatically, in response to your touch.