Thank you for viewing. This is a set of the Ninjutso Sora 4K and Pulsar Xlite V2. I mainly used them for FPS games, but I have multiple mice, and I've decided to sell them because I bought a new mouse and no longer use them. · Both mice had issues with the mouse wheel chattering, so I replaced the wheel's rotary encoder with the high-durability TTC Gold series. · Both mice were cleaned with an ultrasonic cleaner about two weeks ago. · The mouse feet have also been replaced with generic mouse feet. · The Ninjutso Sora 4K seems to have a slightly poor battery life. (It runs out of battery in about 2 days with about 5 hours of FPS gaming and the rest of the time with the computer on for video viewing or idling.) · The Sora 4K cable is about to break, and the connection often cuts out, so I recommend buying a separate cable or using the one from the Xlite. · The Xlite V2 doesn't seem to have deteriorated much. · The Xlite V2 has had its left and right switches replaced with Japanese Omron D2FC switches. Breathable white ergonomic wireless mouse. - Color: White - Shape: Ergonomic design - Connection method: Wireless - Features: Breathable design Thank you for viewing.