- Model Name: M570 - Type: Wireless Trackball - Brand: logicool (Logitech) - Included: USB receiver - Condition: Please check the photos. ・Please only purchase if you understand that this item has been stored at home. (I am a non-smoker and have no pets.) ・Please feel free to ask if you have any other questions. I have confirmed that it works and there are no problems with its use, but it is a used item, so please refrain from purchasing if you are sensitive to such things. I believe the click feel is also fine.