
Okay, I had the same mouse before but with a different "grey" color to be exact. The model is the same BM308. And the sleep mode worked perfectly, after a while you just have to move the mouse and everything works fine, no complaints. Even with games. So unfortunately I broke my old mouse by dropping it a couple of times)) and decided to buy another one but in a different color which is "black" or even glossy black because of it how polished is. Now the sleep mode is just crazy, first I have to press the button to wake it up after a few minutes. Second, it disconnects from Bluetooth from time to time and then starts blinking and reconnects. This can be very annoying when playing games or browsing websites. Although this happens once or twice a day. It seems that the color of the mouse is not just a color, but also a different hardware behavior! Don't buy black! Also, you can see that the price is a bit lower than other colors. Now it's clear why

π±οΈ Logitech MX Master Wireless Mouse: High-Precision Sensor, Easy-Switch up to 3 devices, Meteorite Black
322 Review

Wireless compact mouse Xiaomi Mi Dual Mode Wireless Mouse Silent Edition, white
174 Review

π±οΈ 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

Smartphone Samsung Galaxy A50 4/64 GB, 2 SIM, black
82 Review

Sennheiser PC 8 2 Cancelling Microphone
71 Review

Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review

π₯ Logitech C270 Webcam: Crystal Clear Video and Superior Quality
183 Review