This is a presentation mouse made by KOKUYO. Wireless operation is possible simply by plugging the USB receiver into your computer. This model is suitable for advancing presentation slides and pointer operation. This is a used item, so there is some wear and tear, but its operation has been confirmed. You can use it immediately for presentations and meetings. Condition: - Overall, there is some wear and tear. - Operation is normal. - Accessories: USB receiver (can be stored inside the mouse body) * Please check the product images for detailed operating status and photos. Notes: Please refrain from purchasing if you are looking for a perfect item, as this is a used product. More details here: https://www.kokuyo-st.co.jp/stationery/lp/mouse/index02.html Power source: Battery-powered