Xtrfy - A quick and easy way to check the battery status on the M4 Wireless: Press and hold the side buttons + left click. Updated manual: https://bit.ly/m4-wireless-qsg A video covering all
Amazon.com: Pulsar Gaming Gears Superglide - Fastest and Smoothest Mouse Feet/Skates Made with Ultra Strong Flawless Glass Super Fast Smooth and Durable Sole for Xtrfy M4 Wireless : Video Games
Xtrfy M4 Wireless: Weight Reduction Mod - YouTube
Xtrfy M4 Wireless mod (No hole/68.5g/G305 PCB/Magnetic cover/) : r/MouseReview