【About the Product】 This is a Logicool (Logitech) wireless trackball mouse, the "M575 (Gray)". I am selling it because I am replacing it. ★Key Points The trackball has been replaced with the well-regarded "Perixx PERIPRO-303 GR (34mm)" in March 2024. It offers smoother operation than the original. 【Condition】 I have been using this daily for remote work since around 2020. Therefore, please note the following: ・There are scratches and scuffs overall from use. ・There is a strong feeling of use, such as "shine," on the click areas and the palm rest area due to aging. ・Functionality and operation are all in good working order. This is recommended for those who "don't mind the appearance and want to use an M575 cheaply" or "want to try a custom ball." 【Included Items】 ・Mouse body ・Unifying receiver (stored in the battery compartment of the main unit) ・Installed Perixx ball ※Outer box, instruction manual, and batteries are not included. 【Shipping】 It will be packaged with water-resistant measures + bubble wrap and shipped via anonymous delivery (Rakuraku/Yuuyu Mercari Bin). 【Other】 ・Instant purchase is OK. ・No smokers or pets. The photos are of the actual item, so please check the condition carefully before considering a purchase.