There are no instructions, it is not clear how much charge is in the battery. After a few minutes of inactivity, it goes into sleep mode, by clicking any button it wakes up in a couple of seconds. Without instructions, it is difficult to understand the intricacies of the settings, for example, if you hold down all 3 buttons, then the BT channel switches (to which and from which it is not clear) - definitely by trial and error.
Logitech M510 Blue Wireless Mouse with USB 🖱️ Unifying Receiver - Comfortable Shape, Back/Forward Buttons and Side-to-Side Scrolling
199 Review
Renewed Logitech K800 Wireless 💡 Illuminated Keyboard: Brighter, Better, and More Convenient
204 Review
🖱️ Renewed Logitech M705 Wireless Marathon Mouse: 3-Year Battery & Hyper-Fast Scrolling in Ergonomic Black Design for PC/Laptop with Unifying Receiver
421 Review
A4Tech XL-747H Gaming Mouse, Blue Spider
190 Review