Instant purchase is OK. Price negotiation is OK. This is a wireless mouse that I've used for two years. ⚠️ There is chattering on the front side button, but everything else works fine. (I tested it in Fortnite, and I assigned building to the front side button, so I was able to play without any problems.) There is a feeling of use, so please refrain from purchasing if you are sensitive to this. [Included items] ・Mouse body ・Receiver I will clean and disinfect it with alcohol before shipping.